Unusual Influenzas

Recently we have seen reports of cases of avian and swine influenzas showing up in humans. This of course does happen from time to time, but we presently seem to have a bit of a rash of cases. 

From outbreaknewstoday.com

H5N6 avian influenza case reported in Chengdu, Sichuan Province
Officials with the Hong Kong Centre for Health Protection (CHP) report monitoring a human case of avian influenza A(H5N6) in Chengdu, Sichuan Province, China.The case involved a 49-year-old woman living in Chengdu. She developed symptoms on May 13, and was admitted for treatment on May 16. The patient is now in serious condition. From 2014 to date, 31 human cases of avian influenza A(H5N6) have been reported by the Mainland health authorities.

Germany: H1N1v influenza case reported in teen
The World Health Organization (WHO) reports on a a human case of infection with an influenza A(H1N1)v virus in Germany recently. The individual infected is a 17-year-old boy from Mecklenburg-Western Pomerania who developed an influenza-like illness onset on 18 April 2021. The virus was confirmed with genome sequencing conducted at the National Influenza Centre (NIC) at the Robert Koch Institute in a sample collected as part of routine sentinel surveillance. Sequencing indicated the virus belonged to the Eurasian avian-like (EA) lineage of swine influenza A viruses, specifically clade 1C.2.1. The patient worked on a swine farm a few days prior to illness onset. After developing respiratory symptoms, he was isolated as SARS-CoV-2 infection was suspected. There were no symptoms in other workers at the farm or other members of the case’s family and the case has recovered. Further animal health and virological investigations are ongoing.

H1N2v influenza case reported in Taiwan
The Taiwan Center for Disease Control has reported a human H1N2v influenza case in a 5-year-old girl living in the central area. She had mild illness (fever, runny nose and cough) and didn’t require hospitalization and was engaged in livestock breeding at home. H1N2 is a low-pathogenic influenza virus that exists in pigs. It rarely spreads among people, but there are occasional reports of human infection. A total of 30 confirmed cases of H1N2v influenza worldwide from 2012 to 2021 are distributed in the Americas, with the United States reporting the most cases, followed by Brazil. Most cases have a history of pig exposure or have been exposed to a contaminated environment.

China reports 1st known human case of H10N3 avian influenza
Chinese health authorities have reported the first known human case of H10N3 avian influenza in a man from Jiangsu Province in east-central China. The patient, a 41-year-old man, presented with fever and other symptoms on April 23. At present, the patient’s condition is stable and basically meets the discharge standard. On May 28th, the Chinese Center for Disease Control and Prevention conducted a whole genome sequence determination of the patient specimens sent from Jiangsu Province , and the result was positive for the H10N3 virus. All close contacts were monitored and no additional cases were detected.

Laos reports 1st human H5N6 avian influenza case
The first human case of avian influenza A(H5N6) virus infection has been reported in Laos. A five-year-old boy from Luang Prabang province in northern Laos developed symptoms on 28 February 2021, was hospitalized and tested positive for A(H5N6) on 8 March 2021. The boy recovered. He had exposure to poultry. The poultry tested positive for H5N6. None of the contacts at home or in the hospital had the disease. This is the first avian influenza A(H5N6) case reported to WHO from Lao PDR. To date, a total of 31 laboratory-confirmed cases of human infection with influenza A(H5N6) virus have been reported (30 in China and 1 in Laos).





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