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Nigeria Center for Disease Control. World Health Organization. CDC response teams in country. Cumulative number of Ebola virus disease cases reported — five countries, West Africa, March 29—September 20, Alternate Text: The figure above is a line graph showing the cumulative number of cases of Ebola virus disease reported from Guinea, Liberia, Sierra Leone, Nigeria, and Senegal during March September 20, Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.

Department of Health and Human Services. CDC is not responsible for the content of pages found at these sites. Both patients fully recovered, and no further cases were identified in contacts of either patient. The third case, a fatal infection with an influenza A H1N1 v virus was reported from Ohio during the week ending May 2, week The patient worked at a livestock facility that housed swine, but no direct contact with swine in the week before illness onset was reported.

The patient died from complications of the infection, and no ongoing human-to-human transmission was identified. Swine flu viruses do not normally infect humans. However, sporadic human infections with swine influenza viruses have occurred. A number of different manufacturers produced trivalent three component influenza vaccines for the U.

Some seasonal flu vaccines were formulated to protect against four flu viruses quadrivalent flu vaccines. Recommendations on the control and prevention of influenza are published annually, in late summer or early fall. More information on this vote is available at the CDC Newsroom. Flu vaccine is produced by private manufacturers. In September, seven influenza vaccine manufacturers projected about million to million doses of influenza vaccines would be available for the U.

Of those projected doses, manufacturers estimated that 76 million doses would be quadrivalent flu vaccine. As of February , approximately Flu vaccines are designed to protect against the main flu viruses that research suggests will be the most common during the upcoming season. Three kinds of flu viruses commonly circulate among people today: influenza A H1N1 viruses, influenza A H3N2 viruses, and influenza B viruses.

Each year, reference viruses are used to produce seasonal influenza vaccine. Some of the flu vaccine was quadrivalent vaccine. Vaccines that give protection against three viruses are called trivalent vaccines. Vaccines that give protection against four viruses are called quadrivalent vaccines. These vaccine effectiveness estimates were derived from data collected from the U.

What can you do to protect yourself? Most important on the prevention list is getting a flu vaccine, as well as taking steps to stave off both the flu and COVID, such as hand-washing, social distancing, and wearing a mask.

Learn More About the 'Twindemic'. Further years of data are needed to better understand patterns of activity for HCoVs. Keywords: Coronavirus; Epidemiology; Respiratory tract infection; Respiratory virus.

Publication types Research Support, U.



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