What was the flu season like?
Besides vaccination, how can people protect themselves against the flu? How effective is the flu vaccine? CDC conducts studies each year to determine how well the influenza flu vaccine protects against flu illness. In general, current flu vaccines tend to work better against influenza B and influenza A H1N1 viruses and offer lower protection against influenza A H3N2 viruses.
What are factors that influence how well the vaccine works? How well the flu vaccine works or its ability to prevent flu illness can vary from season to season. At least two factors play an important role in determining the likelihood that flu vaccine will protect a person from flu illness: During years when the flu vaccine is not well matched to circulating influenza viruses, it is possible that little or no benefit from flu vaccination may be observed.
During years when there is a good match between the flu vaccine and circulating viruses, it is possible to measure substantial benefits from flu vaccination in terms of preventing flu illness and complications. However, even during years when the flu vaccine match is good, the benefits of flu vaccination will vary, depending on various factors like the characteristics of the person being vaccinated, what influenza viruses are circulating that season and even, potentially, which type of flu vaccine was used.
Each flu season researchers try to determine how well flu vaccines work as a public health intervention. Estimates of how well a flu vaccine works can vary based on study design, outcome s measured, population studied and the season in which the flu vaccine was studied.
While determining how well a flu vaccine works is challenging, in general, recent studies have supported the conclusion that flu vaccination benefits public health, especially when the flu vaccine is well matched to circulating flu viruses.
CDC uses mathematical modeling to estimate the burden of illness associated with influenza in terms of cases, hospitalizations and deaths.
These figures are then used to assess the burden of illness averted by flu vaccines, i. An explanation of U. What are the benefits of flu vaccination?
There are many reasons to get a flu vaccine each year. Below is a summary of the benefits of flu vaccination, and selected scientific studies that support these benefits. Flu vaccination can keep you from getting sick with flu. For example, duringflu vaccination prevented an estimated 5.
In seasons when the vaccine viruses matched circulating strains, flu vaccine has been shown to reduce the risk of having to go to the doctor with flu by 40 percent to 60 percent. Flu vaccination can reduce the risk of flu-associated hospitalization for children, working age adults, and older adults.
Flu vaccine prevents tens of thousands of hospitalizations each year. For example, duringflu vaccination prevented an estimated 85, flu-related hospitalizations. Flu vaccination is an important preventive tool for people with chronic health conditions.
Vaccination helps protect women during and after pregnancy. Vaccination reduces the risk of flu-associated acute respiratory infection in pregnant women by up to one-half.How effective is the flu vaccine? CDC conducts studies each year to determine how well the influenza (flu) vaccine protects against flu illness.
While vaccine effectiveness (VE) can vary, recent studies show that flu vaccination reduces the risk of flu illness by between 40% and 60% among the. The Medical Services Advisory Committee (MSAC) is an independent non-statutory committee established by the Australian Government Minister for Health in Unaided ratings of effectiveness by consumers or experts.
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