Who gets the flu?

It’s impossible to accurately determine the true number of influenza infections, as many infections are not reported to healthcare institutions.

In the United States, an estimated 5% to 20% of the population are annually infected with influenza viruses, which translates to 50 million cases.

Worldwide, between 3 and 5 million cases of severe illness occurs, with an estimated 250,000 to 500,000 influenza-related deaths.

About 21% of people living in the same house as an infected child or adult will contract flu, according to American research.

Reviewed by Cape Town-based general practitioner, Dr Dalia Hack. March 2019.

Read more:

- Flu risk factors

- Symptoms of the flu


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