10th Novel Influenza A Virus Case Reported
The U.S. CDC reported today another human infection with an influenza A(H1N2) variant (A(H1N2)v) virus was reported by Ohio. The patient was not hospitalized and has completely recovered from their illness.
The patient and the household contacts of the patient report no swine contact or attendance at agricultural exhibits where swine were present.
The CDC stated on September 24, 2021, 'It is possible that limited human-to-human transmission occurred. However, no ongoing human-to-human transmission has been identified.'
This is the third influenza A(H1N2)v virus case identified in 2021.
When an influenza virus that normally circulates in swine (but not people) is detected in a person, it is called a "variant influenza virus."
Ten human infections with a novel influenza A virus have been reported in the USA this influenza season, including two H3N2v (I.A., WI), three H1N2v (I.A., OH (2)), and five H1N1v (I.A., NC, WI (3)) virus infections.
Nine individuals had direct contact with swine, were on a property with swine present, or had a household member direct contact with swine before illness onset.
Furthermore, six infections have occurred in people <18 years of age, and four have occurred in adults.
Early identification and investigation of human infections with novel influenza A viruses are critical so that the risk of infection can be more fully understood and appropriate public health measures can be taken.
Influenza viruses belong to the Orthomyxoviridae RNA virus family and classify into three distinct types based on their significant antigenic differences; influenza A, influenza B, and influenza C, reports the U.S. NIH.
Most importantly, influenza vaccines (flu shots) do not cause the seasonal flu since they are made with either killed or weakened viruses, says the U.S. CDC.
Additional information on swine flu and other Zoootic influenza is posted on this webpage.