How Many Flu Viruses Are There 2019

The x axis is a timeline starting october 5 2019 and extending to may 30 2020. Seasonal flu is the type of influenza that typically causes illness for just a few months out of the year. Human influenza a and b viruses cause seasonal epidemics of disease known as the flu season almost every winter in the united states.

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Possibly the greatest trade deal ever inked was between the flu virus and.

How many flu viruses are there 2019. However it could equal or surpass the 2018 2019 season s. Influenza d may also have the potential to do so if the potential for future transmission from animals to humans comes to fruition. There has been some concern that the flu vaccine recommended for the 2020 flu season in the southern hemisphere includes different h3n2 and b victoria lineage viruses than the 2019 2020 vaccine. Cdc conducts ve studies each year to measure the benefits of flu vaccines in people.

Total deaths for the 2018 2019 flu season. A b c and d. Associated deaths to date in 2020 as there were in all of 2019. Estimated number of influenza associated hospitalizations the y axis extends from 0 to 1 million.

Cdc antigenically characterized 547 influenza viruses collected in the united states from september 29 2019 to april 4 2020. This year s flu season is shaping up to be possibly less severe than the 2017 2018 season when 61 000 deaths were linked to the virus. Past flu seasons plus icon. Influenza a viruses are the only influenza viruses known to cause flu pandemics i e global epidemics of flu disease.

There are four types of influenza viruses. What you need to know for 2020 21. These data are not used to make calculations about vaccine effectiveness ve. Cdc monitors and analyzes key flu activity indicators.

Flu season plus icon. A b and c. How to prevent flu plus icon. Prevent flu plus icon.

December 21 2018 increases in flu activity summarized in cdc s most recent fluview report including increases in influenza like illness and the proportion of laboratory confirmed flu cases nationally have signaled the start of the 2018 2019 influenza season in addition a seventh flu related pediatric death was reported this week. Type a and b cause the annual influenza epidemics that have up to 20 of the population sniffling aching coughing and running high fevers. There are three types of flu viruses. Key facts about flu.

Three types of flu viruses a b and c cause seasonal influenza. There is a single blue shaded curve labeled with 2019 20.