.Researchers found that compared with the Delta variant, Omicron has more spike protein mutations (刺突..., Zhong Nanshan, China’s top respiratory (呼吸的) expert, warned that it may pose more challenges ……

警惕！新冠变异毒株奥米克戎来袭。警惕！新冠变异毒株奥米克戎来袭。When a virus changes, it becomes a “variant  (变种)&rdquo... they may cause. The Delta variant is now common around the world. But a new variant is here, and it&rsquo ……

-19 has brought hearing-impaired people even more challenges. It’s hard for them to get new...格证书的) sign language interpreter.COVID-19 has brought hearing-impaired people even more challenges ……

  【The Delta variant is causing concern as cases are rising in more than 130 countries...;  Alpha, a variant that has spread to more than 50 countries4-5    Alpha, a variant ……

) of COVID-19 is causing more concerns.The strain, named Omicron, was classified (分类) as a “variant... cases of the new variant.Researchers found that compared with the Delta variant, Omicron has more ……

of cases from recent travel to South Africa. The second variant is believed to be more transmissible (可传... contacts of cases from recent travel to South Africa. The second variant is believed to be more ……

警惕！新冠变异毒株奥米克戎来袭。警惕！新冠变异毒株奥米克戎来袭。When a virus (病毒) changes, it becomes a “variant (变种)&rdquo... cause. The Delta variant is now common around the world. Now, there’s a new variant and it&rsquo ……

concerns about the viral pandemic. Researchers are racing to understand more about the variant. What do we... to understand more about the variant. What do we know about Omicron so far?Identified in South Africa ……

because of the rapid spread of the Omicron variant (变异毒株).Khan said that Omicron is now the dominant variant in London. In the last 24 hours before the declaration, London saw the largest number of new ……

version of the virus. Delta spreads faster than the original variant and might cause more severe... version of the virus. Delta spreads faster than the original variant and might cause more severe ……

for the threat of the more transmissible (可传染的) COVID-19 Omicron variant, large-scale Christmas... on Dec 19 in Malaysia. As Malaysia braces for the threat of the more transmissible (可传染的) COVID-19 ……

;Whether the Delta variant is deadlier than previous strains is not known. However, it causes more... the Delta variant is deadlier than previous strains is not known. However, it causes more hospitalizations ……

.But the teenagers with the gene variant had more body fat, bigger waists and higher BMI if they got... to get an hour or more of physical activity daily, most of it aerobic (有氧的) activity such as running ……

that Peruvians living by the sea have more of the genetic variant than those living in mountains... that Peruvians living by the sea have more of the genetic variant than those living in mountains ……

age groups more easily.1. Why is the Delta variant so dangerous?A. It is deadlier than other strains... the Delta variant are formed.C. What should be done to fight the Delta variant.D. What challenges ……