Everyone 6 months of age and older should get a flu vaccine every year before flu activity begins in their community. CDC recommends getting vaccinated by the end of October, if possible. 6月龄或以上人群应在每年流感开始流行前在各自的社区接种流感疫苗。美国疾控中心建议如有可能,尽量在10月底接种疫...
Vaccine efficacy also varies from one person to another. Past studies of healthy young adults have shown influenza vaccine to be 70%-90% effective in preventing illness. In the elderly and those with certain chronic medical conditions such as HIV, the vaccine is often less effective in preventin...
Of the 22 children who died who were eligible for vaccination and whose vaccination status was known, researchers say six had received at least one dose before becoming sick. "End-of-season vaccine effectiveness estimates could change as additional patient data become available or if a change ...
Influenza is caused by flu viruses and it is a contagious respiratory illness. It can cause mild to severe illness, and sometimes can lead to death. Flu is different from a cold. Flu usually onset suddenly. People who are sick with flu often feel some or all of these symptoms: Fever Cou...
The vaccine will not protect those who are already infected. Antiviral drugs can lessen the severity of flu symptoms and shorten the time you are sick. They may also prevent serious flu complications.*The flu vaccine is the best defense against the flu. That we have such a vaccine is a ...
Each year’s flu vaccine targets the three influenza strains that are most likely to circulate and cause illness in the United States, the FDA said.These strains are identified by watching flu trends in the southern hemisphere, where the wintertime cold and flu season is taking place while ...
versions of influenza viruses, while the various versions of the flu shot use inactivated (dead) vaccines or ones that don’t have flu viruses at all. basically the only time a vaccine can make someone ill with the sickness it’s meant to protect against is if it contains a live ...
Free Essay: The Flu vaccine acts by exposing the human body's immune system to proteins on the exterior of influenza viruses that have been rendered...
Infants and young children are at greater risk of getting seriously ill from the flu. That's why in the United States local governments along with their corresponding Departments of Health recommend that all children 6 months and older get the flu vaccine.婴儿和小孩子患流感的风险更高。这也是...
Health Answers: Can the Flu Vaccine Make You Feel Sick? ; Health AnswersHumphries, Courtney