For 10 days after your last close contact with someone with COVID-19, watch for fever (100.4 F or greater), cough, shortness of breath, or other COVID-19 symptoms. More contagious and deadly coronavirus strains circulating in the DR. NeoCoV COVID-19 Strain. Public Health England. Here's everything you need to know about the new omicron subvariants. (HT file photo) Updated on Mar 30, 2021 05:25 PM IST The newest wave of COVID infections and reinfections, fueled by more transmissible subvariants of the Omicron strain including BA.4 and BA.5, continues to grow across the U.S. New COVID-19 variants that emerge could cause more serious illness and fatalities than previous strains, some scientists . BA.4 and BA.5, first identified in South Africa, together make up over 70% of cases, while the "stealth" omicron variant accounts for 27.3% of cases. THE NEW mutant strain of Covid is between 30 and 90 per cent more deadly than the old one but vaccines will still work, scientists said tonight. Diarrhea.
Importantly, as the CDC points out, the above list is not complete . OMICRON might not be the end and new strains of coronavirus could be more severe and infectious, an expert has warned. 3. July 5, 2022 - A new combination vaccine for COVID-19 will likely be coming out this fall, offering more protection against the Omicron variants of COVID-19. One coronavirus strain to be aware of is the Lambda (C. 37) variant, which was first detected in Peru in December 2020. The new COVID-19 subvariants are the reason behind the latest surge in infections in the United States. Nausea or vomiting. BA.4 and BA.5 were first identified in South Africa and may soon become the dominant strains in . Health correspondent Shaun Lintern warns that staffing levels in the NHS are a major threat . . Children and their caregivers arrive for school in New York, Monday, March 7, 2022. Jul 06, 2022 at 5:27 pm. The Dominican Republic is home to the new variants of the Covid-19 virus first reported in the United Kingdom at the end of 2020, and the one associated with local circulation in Brazil. A study in Japan released at the end of February found that the BA.2 strain could be as much as 30% more transmissible than the original Omicron variant, which was already the most contagious form . Congestion or runny nose. Deltacron is a "recombinant" virus, mixing aspects of two separate variants. These are the most common Covid symptoms that could develop if you have caught the infection. Immunologist Professor Doctor Sai Reddy said we "have to prepare" for a new emerging variant in 2022 that could pose a "big risk". New loss of taste or smell. Even as BA.2 has become dominant, overall numbers of cases are still decreasing, says Dr. Jessica Justman, an epidemiologist at Columbia University's Mailman School of Public Health. An unanticipated problem was encountered, check back soon and try again. Here are the symptoms of the BA.4 and BA.5 coronavirus sub-variants that you need to be aware of Mu has changes, called mutations, which mean it might be able to evade some of the protection we get from COVID vaccines. . A NEW variant dubbed "Covid-22" could be more deadly than the world-dominating Delta, an expert has warned. BA.4 and BA.5, first identified in South Africa, together make up over 70% of cases, while the "stealth" omicron variant accounts for 27.3% of cases. . These are the most common Covid symptoms that could develop if you have caught the infection. A brain-swelling disease 75 times more deadly than coronavirus could become the next pandemic killing millions, scientists have warned. The U.N. health agency is currently tracking 20 variations of the Delta variant. Omicron subvariants BA.4 and BA.5 appear to escape antibody responses among both people who had previous Covid-19 infection and those who have been fully vaccinated and boosted, according to new . Immunologist Professor Dr Sai Reddy said we "have to prepare" for a new emerging variant . The new "mutant" variant of coronavirus spreading in the UK is more likely to kill people than the original version of the disease, Prime Minister Boris Johnson has revealed. Headache. By RNZ. Sat 12 Feb 2022 14.10 EST Last modified on Sun 13 Feb 2022 00.07 EST.
COVID new strain symptoms may be difficult to spot at first, but there are some key coronavirus signs and symptoms you should be looking out for. The omicron strain of Covid-19 is at least 40% more lethal than seasonal flu, according Japanese scientists, underscoring the potential danger of lifting pandemic curbs too quickly and . The World Health Organization has recently named a new "variant of interest" of the coronavirus, called the Mu variant. The four most common warning signs of coronavirus have been revealed. By Rebecca Perring. The four most common warning signs of coronavirus have been revealed. Sore throat. Two Omicron sub-variants are causing a sudden spike in Covid cases across the UK. 1. Published June 27, 2022 11:17 a.m. PDT. Their research has identified six possible sub-divisions of COVID-19, using machine learning to analyze data from a symptom-tracking app. 1 of 2. The Wuhan-originated novel coronavirus that globally killed around 180,000 people so far, has mutated into at least 30 different genetic variations The research study is based on the analysis of the strains from 11 randomly chosen coronavirus patients from Hangzhou, which were tested for General questions from the public or healthcare provider inquiries about COVID-19 may be directed to the . What You Need to Know. SARS-CoV-2 variants of concern and . Nausea or vomiting. Explainer - There's a new Covid-19 variant making headlines around the world - Deltacron. They have warned that this is a new strain which is much more deadly than all the other . Cell. ECDC regularly assesses new evidence on variants detected through . Congestion or runny nose. Whatever you may think about that name, it's exactly what it sounds like - a combination of the . The U.K. strain, called SARS-CoV-2 B.1.1.7, was first detected in southeast England in November. Vaccine maker Moderna said in a . Here are five things you need to know about the Delta variant. The TikTok psychic has shared a series of strange revelations about 2022 to prove their authenticity - and says we've got another strain of Covid coming that will . This makes the new strains 70% more . July 5, 2022 - A new combination vaccine for COVID-19 will likely be coming out this fall, offering more protection against the Omicron variants of COVID-19. Importantly, as the CDC points out, the above list is not complete . More info. WHO's statement aims to allay worldwide concerns . The Omicron BA.5 subvariant is now the dominant strain of COVID-19 plaguing the US, per new estimates from the Centers for Disease Control and Prevention. These findings - from a pre-print paper not yet peer-reviewed - reflect how the thinking regarding the disease is evolving and how technologies are being leveraged to fight the disease. Doctor Norman Swan says the .
Variants of viruses occur when there is a change or mutation to the virus's genes. The BA.2 variant appears to be on its way to becoming the dominant coronavirus strain, having roughly doubled each week for the past month, according to the U.S. Centers for Disease Control and Prevention.
The subvariant BA.2.12.1 now accounts for 20% of new COVID cases in New Eng But some experts believe that future COVID-19 strains will eventually weaken, even as the . "This is a . The CDC released new estimates on Tuesday . The New York Times reported that Britain has sequenced more than 200,000 coronavirus genomes out of its 2.8 million COVID-19 positive cases. More info. New loss of taste or smell. Diarrhea. Preliminary data suggests that the United Kingdom variant of the coronavirus may be more deadly.. (AP Photo/Seth Wenig) These findings come as the recent drop in COVID infections worldwide has slowed, and seems . The omicron strain of Covid-19 is at least 40% more lethal than seasonal flu, according Japanese scientists, underscoring the potential danger of lifting pandemic curbs too quickly and . After more than two years into the coronavirus pandemic, a trend has become apparent. For the P.1 variant .
Scientists in China have discovered this new strain of corona virus named NeoCov. Headache. Vaccine maker Moderna said in a . Last week, the COVID test positivity . The next Covid-19 variant that will rise to world attention will be more contagious than omicron, but the real question scientists need to answer is whether or not it will be more deadly, World . Here's everything you need to know about the new omicron subvariants. The new study which has not been peer-reviewed but has been published on medrxiv unveiled the new variant C.1.2, which is a descendant of the C.1 variant that was originally discovered in January 2021. As COVID-19 cases surge across the country due in large part to the highly transmissible, now-dominant Delta (B.1.617.2) variant, health experts continue to closely monitor other potentially threatening variants. A new variant of concern emerges and dominates transmission in a series of waves. The short answer is, we don't know yet. After several weeks of a downward trend, the seven-day number of new Vermont hospital admissions with a COVID infection rose throughout the past week with 53 total new admissions, according to the . The Omicron BA.5 subvariant is now the dominant strain of COVID-19 plaguing the US, per new estimates from the Centers for Disease Control and Prevention. A new coronavirus variant, first detected two months ago, is making its way across the U.S. and spreading more quickly in the Northeast and West, new data released this week shows.. "The BA.4 and BA.5 sub-variants were identified because South Africa is still doing the vital genetic sequencing that many other . A new subvariant of Omicron is expected to become the dominant strain of COVID-19 in Ontario, health officials say. Delta is more contagious than the other virus strains. Scientists have discovered a new coronavirus variant in South Africa and a number of other countries, and it could be more infectious and evade vaccines.. This was reported by Dr. Robert Paulino Ramirez, researcher, and director of the . Slowing the spread of the virus, by protecting yourself and others, can help slow the emergence of new variants. After several weeks of a downward trend, the seven-day number of new Vermont hospital admissions with a COVID infection rose throughout the past week with 53 total new admissions, according to the . A new one could turn out . Mutations in viruses including the coronavirus causing the COVID . Omicron's BA.5 subvariant is now the dominant COVID-19 strain in the United States and accounts for nearly half of infections in the New York region, according to the latest Centers for Disease . According to scientists, the new strain of the deadly virus is 56 per cent more contagious than the existing one. It was first found in Colombia in January 2021, and has been found in about 39 countries so far. World Health Organization (WHO) has said that the emergence of new, mutated, and more infectious strains is part of the evolution of a virus. A total 611 cases of COVID-19 caused by the B.1.1.7 variant have been reported among 33 states. Man, 75, Dead Following Officer-Involved ShootingA man died at a hospital after being shot by police following an incident inside a residence on Gilgunn Way Saturday morning. It just won't leave us alone. About 1 in 3 COVID-19 cases in the United States now stem from the BA.4 and BA.5 subvariants of the omicron strain, which are on their way to becoming the most dominant coronavirus strains in the c The worrisome Omicron subvariant BA.5, which is better at reinfecting people than any other, is now the most dominant strain in the U.S., the CDC estimates. 10:01, Sat, Feb 5, 2022 | UPDATED: 16:59, Sat, Feb 5, . New, more dangerous variants of the COVID-19 virus have come ashore in Arizona, prompting doctors to redouble their efforts to get people vaccinated and to continue wearing masks in . The AY.4.2 is "one to watch because we have to continuously keep an eye on how this virus is changing," said Van . PETALING JAYA: With new variants of Covid-19 infections in the country, much of what is known about the symptoms has been thrown to the wind. The U.S. has no large-scale, nationwide system for sequencing the virus to look for new mutations. Discover. The CDC released new estimates on Tuesday . The U.S., which has had more than 21.4 million cases, has only sequenced about 58,000 genomes. New variants of the virus are expected to occur. Then let's say that the new virus, being 70% more easily contracted, leaves 170,000 people with the disease and only 1% die that leaves 1,700 people dead. For the B.1.351 variant, five cases overall have been reported among two states. Omicron's BA.5 subvariant is now the dominant COVID-19 strain in the United States and accounts for nearly half of infections in the New York region, according to the latest Centers for Disease . The new COVID-19 subvariants are the reason behind the latest surge in infections in the United States. Sore throat. Also, it is deadlier than the previous . A SELF-proclaimed "time-traveller" from 2714 has bizarrely given the apparent dates this year that a deadly new Covid strain will emerge - and a human-chimp hybrid child will be born. Ray says it is the nature of RNA viruses such as the coronavirus to evolve and change gradually. The study found that the risk of a new health problem was highest around the time of a Covid-19 reinfection, but it also persisted for at least six months. As New York enters its third pandemic summer, the city has been caught in another COVID wave, with an explosively contagious omicron strain . According to the latest epidemiology . Omicron is currently the globally dominant COVID-19 variant, while Delta, which swept the world last year, was renowned . Naturally, the WHO's next variant of concern will be in some way more virulent than Omicron is now. 2021. The county reported another 1,888 new COVID-19 cases Tuesday, raising the overall pandemic total to 2,879,817. Next Covid strain could kill many more, warn scientists ahead of England restrictions ending . Muscle or body aches.
Muscle or body aches. Another omicron subvariant that's apparently "even more transmissible" is gaining steam in New England. "Geographic separation tends to result in genetically distinct variants," he says. COVID new strain symptoms may be difficult to spot at first, but there are some key coronavirus signs and symptoms you should be looking out for.
People are being urged to undergo vaccination in Himachal Pradesh as the new Covid-19 variant is reported to be more lethal. The U.K.'s new strain of coronavirus may be more deadly than first thought, Prime Minister Boris Johnson said, as he warned again that the country faces a long wait before it . A new variant dubbed 'Covid-22' could be more deadly than the Delta variant, an expert has warned. The BA.5 straina subvariant of omicronaccounted for more than half of all U.S. coronavirus cases last week, as federal regulators encourage drugmakers to retool their vaccines to target new . BA.4 and BA.5 are expected to become the dominant Covid strains in Australia in the coming weeks. Two new sub variants of COVID-19 are creating concern among experts. Ferrer noted the county has been averaging more than 2,000 cases per day over the . The revelation came as Boris Johnson warned the . Jamie Micklethwaite 7 min read The CDC labeled Delta "a variant of concern ," using a designation also given to the Alpha strain that first appeared in Great Britain, the Beta strain that first surfaced in South Africa, and the Gamma strain identified . The extra-worrisome . A study has shown them to be almost six times more infectious than the original Wuhan strain of . . BA.2, or "stealth omicron," was the first subvariant of omicron to cause an increase in contagiousness concerns, but BA.2.12.1 quickly took over as the dominant strain causing infections in the US .
Importantly, as the CDC points out, the above list is not complete . OMICRON might not be the end and new strains of coronavirus could be more severe and infectious, an expert has warned. 3. July 5, 2022 - A new combination vaccine for COVID-19 will likely be coming out this fall, offering more protection against the Omicron variants of COVID-19. One coronavirus strain to be aware of is the Lambda (C. 37) variant, which was first detected in Peru in December 2020. The new COVID-19 subvariants are the reason behind the latest surge in infections in the United States. Nausea or vomiting. BA.4 and BA.5 were first identified in South Africa and may soon become the dominant strains in . Health correspondent Shaun Lintern warns that staffing levels in the NHS are a major threat . . Children and their caregivers arrive for school in New York, Monday, March 7, 2022. Jul 06, 2022 at 5:27 pm. The Dominican Republic is home to the new variants of the Covid-19 virus first reported in the United Kingdom at the end of 2020, and the one associated with local circulation in Brazil. A study in Japan released at the end of February found that the BA.2 strain could be as much as 30% more transmissible than the original Omicron variant, which was already the most contagious form . Congestion or runny nose. Deltacron is a "recombinant" virus, mixing aspects of two separate variants. These are the most common Covid symptoms that could develop if you have caught the infection. Immunologist Professor Doctor Sai Reddy said we "have to prepare" for a new emerging variant in 2022 that could pose a "big risk". New loss of taste or smell. Even as BA.2 has become dominant, overall numbers of cases are still decreasing, says Dr. Jessica Justman, an epidemiologist at Columbia University's Mailman School of Public Health. An unanticipated problem was encountered, check back soon and try again. Here are the symptoms of the BA.4 and BA.5 coronavirus sub-variants that you need to be aware of Mu has changes, called mutations, which mean it might be able to evade some of the protection we get from COVID vaccines. . A NEW variant dubbed "Covid-22" could be more deadly than the world-dominating Delta, an expert has warned. BA.4 and BA.5, first identified in South Africa, together make up over 70% of cases, while the "stealth" omicron variant accounts for 27.3% of cases. . These are the most common Covid symptoms that could develop if you have caught the infection. A brain-swelling disease 75 times more deadly than coronavirus could become the next pandemic killing millions, scientists have warned. The U.N. health agency is currently tracking 20 variations of the Delta variant. Omicron subvariants BA.4 and BA.5 appear to escape antibody responses among both people who had previous Covid-19 infection and those who have been fully vaccinated and boosted, according to new . Immunologist Professor Dr Sai Reddy said we "have to prepare" for a new emerging variant . The new "mutant" variant of coronavirus spreading in the UK is more likely to kill people than the original version of the disease, Prime Minister Boris Johnson has revealed. Headache. By RNZ. Sat 12 Feb 2022 14.10 EST Last modified on Sun 13 Feb 2022 00.07 EST.
COVID new strain symptoms may be difficult to spot at first, but there are some key coronavirus signs and symptoms you should be looking out for. The omicron strain of Covid-19 is at least 40% more lethal than seasonal flu, according Japanese scientists, underscoring the potential danger of lifting pandemic curbs too quickly and . The World Health Organization has recently named a new "variant of interest" of the coronavirus, called the Mu variant. The four most common warning signs of coronavirus have been revealed. By Rebecca Perring. The four most common warning signs of coronavirus have been revealed. Sore throat. Two Omicron sub-variants are causing a sudden spike in Covid cases across the UK. 1. Published June 27, 2022 11:17 a.m. PDT. Their research has identified six possible sub-divisions of COVID-19, using machine learning to analyze data from a symptom-tracking app. 1 of 2. The Wuhan-originated novel coronavirus that globally killed around 180,000 people so far, has mutated into at least 30 different genetic variations The research study is based on the analysis of the strains from 11 randomly chosen coronavirus patients from Hangzhou, which were tested for General questions from the public or healthcare provider inquiries about COVID-19 may be directed to the . What You Need to Know. SARS-CoV-2 variants of concern and . Nausea or vomiting. Explainer - There's a new Covid-19 variant making headlines around the world - Deltacron. They have warned that this is a new strain which is much more deadly than all the other . Cell. ECDC regularly assesses new evidence on variants detected through . Congestion or runny nose. Whatever you may think about that name, it's exactly what it sounds like - a combination of the . The U.K. strain, called SARS-CoV-2 B.1.1.7, was first detected in southeast England in November. Vaccine maker Moderna said in a . Here are five things you need to know about the Delta variant. The TikTok psychic has shared a series of strange revelations about 2022 to prove their authenticity - and says we've got another strain of Covid coming that will . This makes the new strains 70% more . July 5, 2022 - A new combination vaccine for COVID-19 will likely be coming out this fall, offering more protection against the Omicron variants of COVID-19. Importantly, as the CDC points out, the above list is not complete . More info. WHO's statement aims to allay worldwide concerns . The Omicron BA.5 subvariant is now the dominant strain of COVID-19 plaguing the US, per new estimates from the Centers for Disease Control and Prevention. These findings - from a pre-print paper not yet peer-reviewed - reflect how the thinking regarding the disease is evolving and how technologies are being leveraged to fight the disease. Doctor Norman Swan says the .
Variants of viruses occur when there is a change or mutation to the virus's genes. The BA.2 variant appears to be on its way to becoming the dominant coronavirus strain, having roughly doubled each week for the past month, according to the U.S. Centers for Disease Control and Prevention.
The subvariant BA.2.12.1 now accounts for 20% of new COVID cases in New Eng But some experts believe that future COVID-19 strains will eventually weaken, even as the . "This is a . The CDC released new estimates on Tuesday . The New York Times reported that Britain has sequenced more than 200,000 coronavirus genomes out of its 2.8 million COVID-19 positive cases. More info. New loss of taste or smell. Diarrhea. Preliminary data suggests that the United Kingdom variant of the coronavirus may be more deadly.. (AP Photo/Seth Wenig) These findings come as the recent drop in COVID infections worldwide has slowed, and seems . The omicron strain of Covid-19 is at least 40% more lethal than seasonal flu, according Japanese scientists, underscoring the potential danger of lifting pandemic curbs too quickly and . After more than two years into the coronavirus pandemic, a trend has become apparent. For the P.1 variant .
Scientists in China have discovered this new strain of corona virus named NeoCov. Headache. Vaccine maker Moderna said in a . Last week, the COVID test positivity . The next Covid-19 variant that will rise to world attention will be more contagious than omicron, but the real question scientists need to answer is whether or not it will be more deadly, World . Here's everything you need to know about the new omicron subvariants. The new study which has not been peer-reviewed but has been published on medrxiv unveiled the new variant C.1.2, which is a descendant of the C.1 variant that was originally discovered in January 2021. As COVID-19 cases surge across the country due in large part to the highly transmissible, now-dominant Delta (B.1.617.2) variant, health experts continue to closely monitor other potentially threatening variants. A new variant of concern emerges and dominates transmission in a series of waves. The short answer is, we don't know yet. After several weeks of a downward trend, the seven-day number of new Vermont hospital admissions with a COVID infection rose throughout the past week with 53 total new admissions, according to the . The Omicron BA.5 subvariant is now the dominant strain of COVID-19 plaguing the US, per new estimates from the Centers for Disease Control and Prevention. A new coronavirus variant, first detected two months ago, is making its way across the U.S. and spreading more quickly in the Northeast and West, new data released this week shows.. "The BA.4 and BA.5 sub-variants were identified because South Africa is still doing the vital genetic sequencing that many other . A new subvariant of Omicron is expected to become the dominant strain of COVID-19 in Ontario, health officials say. Delta is more contagious than the other virus strains. Scientists have discovered a new coronavirus variant in South Africa and a number of other countries, and it could be more infectious and evade vaccines.. This was reported by Dr. Robert Paulino Ramirez, researcher, and director of the . Slowing the spread of the virus, by protecting yourself and others, can help slow the emergence of new variants. After several weeks of a downward trend, the seven-day number of new Vermont hospital admissions with a COVID infection rose throughout the past week with 53 total new admissions, according to the . A new one could turn out . Mutations in viruses including the coronavirus causing the COVID . Omicron's BA.5 subvariant is now the dominant COVID-19 strain in the United States and accounts for nearly half of infections in the New York region, according to the latest Centers for Disease . According to scientists, the new strain of the deadly virus is 56 per cent more contagious than the existing one. It was first found in Colombia in January 2021, and has been found in about 39 countries so far. World Health Organization (WHO) has said that the emergence of new, mutated, and more infectious strains is part of the evolution of a virus. A total 611 cases of COVID-19 caused by the B.1.1.7 variant have been reported among 33 states. Man, 75, Dead Following Officer-Involved ShootingA man died at a hospital after being shot by police following an incident inside a residence on Gilgunn Way Saturday morning. It just won't leave us alone. About 1 in 3 COVID-19 cases in the United States now stem from the BA.4 and BA.5 subvariants of the omicron strain, which are on their way to becoming the most dominant coronavirus strains in the c The worrisome Omicron subvariant BA.5, which is better at reinfecting people than any other, is now the most dominant strain in the U.S., the CDC estimates. 10:01, Sat, Feb 5, 2022 | UPDATED: 16:59, Sat, Feb 5, . New, more dangerous variants of the COVID-19 virus have come ashore in Arizona, prompting doctors to redouble their efforts to get people vaccinated and to continue wearing masks in . The AY.4.2 is "one to watch because we have to continuously keep an eye on how this virus is changing," said Van . PETALING JAYA: With new variants of Covid-19 infections in the country, much of what is known about the symptoms has been thrown to the wind. The U.S. has no large-scale, nationwide system for sequencing the virus to look for new mutations. Discover. The CDC released new estimates on Tuesday . The U.S., which has had more than 21.4 million cases, has only sequenced about 58,000 genomes. New variants of the virus are expected to occur. Then let's say that the new virus, being 70% more easily contracted, leaves 170,000 people with the disease and only 1% die that leaves 1,700 people dead. For the B.1.351 variant, five cases overall have been reported among two states. Omicron's BA.5 subvariant is now the dominant COVID-19 strain in the United States and accounts for nearly half of infections in the New York region, according to the latest Centers for Disease . The new COVID-19 subvariants are the reason behind the latest surge in infections in the United States. Sore throat. Also, it is deadlier than the previous . A SELF-proclaimed "time-traveller" from 2714 has bizarrely given the apparent dates this year that a deadly new Covid strain will emerge - and a human-chimp hybrid child will be born. Ray says it is the nature of RNA viruses such as the coronavirus to evolve and change gradually. The study found that the risk of a new health problem was highest around the time of a Covid-19 reinfection, but it also persisted for at least six months. As New York enters its third pandemic summer, the city has been caught in another COVID wave, with an explosively contagious omicron strain . According to the latest epidemiology . Omicron is currently the globally dominant COVID-19 variant, while Delta, which swept the world last year, was renowned . Naturally, the WHO's next variant of concern will be in some way more virulent than Omicron is now. 2021. The county reported another 1,888 new COVID-19 cases Tuesday, raising the overall pandemic total to 2,879,817. Next Covid strain could kill many more, warn scientists ahead of England restrictions ending . Muscle or body aches.
Muscle or body aches. Another omicron subvariant that's apparently "even more transmissible" is gaining steam in New England. "Geographic separation tends to result in genetically distinct variants," he says. COVID new strain symptoms may be difficult to spot at first, but there are some key coronavirus signs and symptoms you should be looking out for.
People are being urged to undergo vaccination in Himachal Pradesh as the new Covid-19 variant is reported to be more lethal. The U.K.'s new strain of coronavirus may be more deadly than first thought, Prime Minister Boris Johnson said, as he warned again that the country faces a long wait before it . A new variant dubbed 'Covid-22' could be more deadly than the Delta variant, an expert has warned. The BA.5 straina subvariant of omicronaccounted for more than half of all U.S. coronavirus cases last week, as federal regulators encourage drugmakers to retool their vaccines to target new . BA.4 and BA.5 are expected to become the dominant Covid strains in Australia in the coming weeks. Two new sub variants of COVID-19 are creating concern among experts. Ferrer noted the county has been averaging more than 2,000 cases per day over the . The revelation came as Boris Johnson warned the . Jamie Micklethwaite 7 min read The CDC labeled Delta "a variant of concern ," using a designation also given to the Alpha strain that first appeared in Great Britain, the Beta strain that first surfaced in South Africa, and the Gamma strain identified . The extra-worrisome . A study has shown them to be almost six times more infectious than the original Wuhan strain of . . BA.2, or "stealth omicron," was the first subvariant of omicron to cause an increase in contagiousness concerns, but BA.2.12.1 quickly took over as the dominant strain causing infections in the US .