Influenza and Influenza Vaccines
Centers for Disease Control and Prevention
National Center for Immunization and Respiratory Diseases
Influenza and Influenza Vaccines
Epidemiology and Prevention of Vaccine-Preventable Diseases (Pink Book) Webinar Series September 25, 2019
Photographs and images included in this presentation are licensed solely for CDC/NCIRD online and presentation use. No rights are implied or extended for use in printing or any use by other CDC CIOs or any external audiences.
Influenza
Highly infectious viral illness First pandemic in 1580 At least 4 pandemics in 19th century Three pandemics in the 20th century
? Estimated 50 million deaths worldwide in pandemic of 1918-1919 ? Pandemics of 1957 and 1968 of lesser severity Most recent pandemic (H1N1) in 2009-2010
Virus first isolated in 1933
Influenza Virus
Single-stranded RNA virus Orthomyxoviridae family 3 types: A, B, C Subtypes of type A are determined by hemagglutinin and neuraminidase
Influenza Virus Strains
Type A
? Moderate to severe illness ? All age groups ? Humans and other animals
Type B
? Milder epidemics ? Primarily affects children ? Humans only
Type C
? Rarely reported in humans ? No epidemics
Influenza Type A Subtypes
Subtypes of type A determined by hemagglutinin (H) and neuraminidase (N)
A/California/7/2009 (H1N1) Virus type Geographic origin Strain number Year of isolation Virus subtype
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related searches
- sanofi flu vaccines 2019 2020
- cdc flu vaccines 2019 20
- influenza a and b
- coding for vaccines and administration
- cdc vaccines and preventable diseases
- who invented vaccines and why
- influenza a symptoms and treatment
- influenza a signs and symptoms
- cdc influenza signs and symptoms
- influenza type a symptoms and treatment
- difference between influenza a and b
- influenza b symptoms and treatment