len pre porovnanie : Influenza has already sickened at least 13 million Americans this winter, hospitalizing 120,000 and killing 6,600, according to the CDC. And flu season hasn't even peaked. In a bad year, the flu kills up to 61,000 Americans.

Worldwide, the flu causes up to 5 million cases of severe illness worldwide and kills up to 650,000 people every year, according to the World Health Organization.

source: https://www.medscape.com/viewarticle/924306