答案:A解析:文章明确提到 “The flu virus change a little every year. The vaccine you got last year won't help you fight this season's virus.”(流感病毒每年都会有一点变化。你去年接种的疫苗无法帮助你对抗本季的病毒),这就是人们每年都要接种流感疫苗的原因,所以答案是 A。答案:B解析:文章提到 “...
Q5:Why do I have to get a flu vaccination every year?A:The flu virus has the ability to change a little every year. The vaccine you received last year won't protect you from the new virus. There is no vaccine that can stop the flu forever.Q6:50.___A...
Answer to: Why do we need to take a flu vaccine every year? Why does it not confer long-term immunity to the flu like other vaccines? By signing...
All year long, researchers at hospitals around the world collect samples from flu patients and send them to top virology experts with one goal: to design the vaccine for the next flu season. But why do we need a new one every year? Vaccines for diseases like mumps and rubella offer a li...
All year long, researchers at hospitals around the world collect samples from flu patients and send them to top virology experts with one goal: to design the vaccine for the next flu season. But why do we need a new one every year? Vaccines for diseases like mumps an...
- 问题49:根据文章第二段The flu virus change a little every year. The vaccine you got last year won't help you fight this season's virus.,可知流感病毒每年都会发生变化,所以需要每年接种疫苗。 - 问题50:根据文章第三段You had better rest at home and don't go out.,可知如果得了流感,最好...
Q5: Why do I have to get a flu vaccination every year?A: The flu virus has the ability to change a little every year. The more you received last year won't protect you from this season's virus. There is, vaccine that can stop flu forever.Q5: 50.___A...
anyone with an existing health condition flu can have a much more severe effect, so anyone at risk needs to be vaccinated yearly.And every year in Scotland more than a million doses of flu vaccine are administered.to keep flu bay in winter your hands often as possible.plenty of exercise....
While social distancing and wearing masks kept the 2021–2022 flu season milder than pre-pandemic levels, experts who expect flu cases to rise this year as COVID-19 restrictions are lifted are urging people to get their flu vaccine to prevent the nation'
Q:We don't need two doses of the flu vaccine. Why two COVID doses, every year? Some diseases only need one vaccine in an entire life. A:"Stable" viruses that don't replicate quickly need fewer boosters, because there's lasting immunity. For instance, we need a tetanus shot only on...