The reason for this continuing susceptibility is that influenza viruses are continually mutating, through the mechanisms of antigenic shift and drift described above. Each year, researchers update the vaccine to
Work started this week on next season's flu vaccine (疫苗), with experts working off forecasts about which types of the flu virus will be making the rounds. But don't expect any improvements. Flu experts are already admitting that most vaccines will give at best basic protection, because th...
Sometimes the virus doesn’t grow well in eggs, which can mean less vaccine than expected.”(使用鸡蛋是一个棘手且不可预测的过程。有时病毒在鸡蛋中不能很好地生长,这可能意味着疫苗比预期的少。)可知,有时候病毒生长得并不好,可能会达不到期望值。故选B。 (4)题详解: 猜测句意题。根据横线前句...
Meanwhile, Ma Ruiqi, a resident of Harbin, capital of Heilongjiang, said she is waiting anxiously for the influenza vaccine for her 1-year-old daughter. "Almost every day there will be parents asking about the vaccines' arrival in the WeChat group of our community-level hospi...
Everyone 6 months and older should get a flu vaccine each year. Get vaccinated to protect yourself and your loved ones.6月龄以上的人群应该每年都接种流感疫苗。接种疫苗可以保护自己和亲人。Don’t Be a Zombie别做僵尸Sleep...
the big news this year? the cdc has no preference for the flu shot over the nasal spray vaccine. in previous years the nasal spray wasn’t as effective against the influenza a virus strain h1n1, but the manufacturer has tweaked the vaccine, the cdc says. there is one major difference to...
Learn about influenza (flu) symptoms, treatment with antiviral drugs, flu shot side effects, and prevention during flu season. Discover when to get the flu vaccine, how long the flu lasts, the contagious period, flu types, and how it spreads.
This new vaccine approach, described today (May 1) in the journalScience Translational Medicine, is part of a 5-year-old effort to develop a longer-lasting universal flu vaccine that would be able to foil all versions of the virus.
Drug10.makers have made _9_(change) to the vaccine. Even though the vaccine did not work well last year, health experts still _ 10_ (strong) suggest getting vaccinated. 相关知识点: 试题来源: 解析 Passage 28 语篇导读 美国疾病控制与预防中心主任罗伯特 · 雷德菲尔德 博士接受美联社采访时...
For people with heart failure, getting the vaccine in any given year was linked to a 50 percent decrease in risk of death during flu season, according to a new study. 3 months ago Dad speaks out after 4-year-old daughter gets serious complications from flu ...