INFLUENZA (10): USA (MICHIGAN) INFLUENZA A(H3V) AND INFLUENZA A(H1N2V)
COUNTY FAIRS
A ProMED-mail post
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International Society for Infectious Diseases
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Date: Sat 5 Aug 2023
Source: Outbreak News Today [edited]
https://outbreaknewstoday.com/michigan-reports-two-human-swine-flu-cases-in-late-july-16130/
The Michigan Department of Health and Human Services reported 2 human
infections with novel influenza A viruses in July [2023].
One patient, a Lapeer County resident who was an exhibitor at the
Oakland County Fair, was infected with an influenza A(H3) variant
(A(H3)v) virus, and the other patient, a Tuscola County resident who
attended the Tuscola County Fair, was infected with an influenza
A(H1N2)v virus.
Both patients are < 18 years of age, were not hospitalized, received
oseltamivir, and have recovered or are recovering from their illness.
No person-to-person transmission of variant influenza A viruses
associated with either patient has been identified. The investigations
are ongoing.
These are the 1st variant influenza A viruses reported in the United
States in 2023.
When an influenza virus that normally circulates in swine (but not
people) is detected in a person, it is called a “variant” influenza
virus. Most human infections with variant influenza viruses occur
following exposure to swine, but human-to-human transmission can
occur. It is important to note that in most cases, variant influenza
viruses have not shown the ability to spread easily and sustainably
from person to person.
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