Every year, the U.S Centers for Disease Control and Prevention (CDC) usually generates estimates of the number of healthcare encounters that happen during a flu season. These estimates are used to describe the annual burden of flu collectively.
The CDC uses a mathematical model based on real-world data to produce these estimates.
During the USA's 2020-2021 flu season, the number of people hospitalized with influenza was too low to generate stable burden estimates.
Read More
