Does vaccination against the flu reduce the risk of complications?

Influenza, also called the flu, is an infectious illness caused by influenza viruses. It can lead to mild to severe illness and can even result in hospitalization or death. One of the most effective ways to prevent the flu is through vaccination. But does vaccination against the flu reduces the risk of complications?

The short answer is yes. Vaccination against the flu can reduce the risk of complications associated with the illness. The flu vaccine works by stimulating the body’s immune system to produce antibodies that can fight off the influenza viruses. The vaccine is usually formulated to protect against the most common strains of flu viruses expected to circulate during the flu season.

Studies have shown that the flu vaccine can significantly reduce the risk of hospitalization and death in individuals who are at high risk of complications from the flu. These include young children, pregnant women, older adults, and people with underlying medical conditions such as asthma, diabetes, or heart disease.

For example, a study conducted in the United States found that the flu vaccine reduced the risk of hospitalization by 40% to 60% among adults aged 50 years and older during the 2012-2013 flu season. Another study found that the flu vaccine reduced the risk of death by 51% among adults aged 65 years and older during the 2018-2019 flu season.

In addition to reducing the risk of complications, the flu vaccine can also help to prevent the spread of the flu viruses. This is particularly important for individuals who may be at high risk of complications, as they may be more susceptible to severe illness if they contract the flu. If you are visiting your elderly relatives in the nursing home, for example, having a flu shot is a great idea.

The flu vaccine may not provide complete protection against the flu. The effectiveness of the vaccine can vary depending on factors such as the age and health status of the individual and the match between the vaccine and the circulating flu viruses. However, even partial protection can help to reduce the severity of illness and the risk of complications.

Vaccination against the flu can reduce the risk of complications associated with the illness. It is recommended that individuals get vaccinated annually, especially those who are at high risk of complications. Other measures, such as hand hygiene and avoiding close contact with sick individuals, can also help to prevent the spread of the flu viruses.