Swine flu cases found in people with no contact with pigs

It is reported World Health Organization (World Health Organization), September 2, 2023, Ministry of Health, Welfare and Sports Netherlands Report confirmed case of influenza A (H1N1) virus pig source. The patient has reportedly recovered and did not have any direct contact with pigs before contracting the virus.

The case was discovered during routine surveillance Respiratory Diseases. According to the information available, as of September 7, there were no symptomatic contacts of this case, and there were no further test reports. Five close contacts were tracked for a maximum incubation period of 10 days, and no symptoms appeared. Therefore, there was no evidence of human-to-human transmission, and the case was regarded as a suspected case. sporadic human cases Influenza A H1N1 virus.Consider the potential for community transmission among humans and/or international spread of disease through humans low.

Influenza A (H1) viruses are circulating in swine herds in most parts of the world. When an influenza virus that normally circulates among pigs is detected in humans, it is called an “influenza virus variant.” H1N1, H1N2, and H3N2 are the major subtypes of swine influenza A viruses in pigs that occasionally infect humans, usually after direct or indirect contact with pigs or contaminated environments. Human infection with the virus variant tends to cause mild clinical illness, although some cases have been hospitalized with more severe illness and others have been admitted to hospital. mortal. Sporadic human infections caused by influenza A (H1N1v) and influenza A (H1N2v) viruses have been previously reported in the Netherlands, but there was no evidence of sustained human-to-human transmission.

“This is the first human infection caused by influenza A (H1N1) virus reported in the Netherlands in 2023 and the third in the past five years.”

This is the first human infection caused by the virus swine flu virus The Netherlands reported the H1N1 virus in 2023, the third human infection in the past five years.It has been documented since 1986 nine cases Variations in Dutch Hominins. This was an adult from the province of Noord-Brabant with no underlying medical conditions or history of occupational exposure to animals. On August 20, 2023, the patient developed fatigue and general malaise, and developed acute respiratory infection the next day, with chills, sneezing, cough, headache and general weakness, followed by fever.

On August 30, sequencing results showed that the virus was A/Netherlands/10534/2023, an avian Eurasian swine influenza A(H1N1)v clade 1C.2.2 virus. The virus isolate will be shared with the WHO Collaborating Center in London (United Kingdom of Great Britain and Northern Ireland) and the WHO Avian and Swine Influenza Reference Laboratory. world organization for animal health (wow) in Animal and Plant Health Department (APHA). U.K. These sequences can be found in the GISAID database under accession number EPI_ISL_18168180.

As of September 13, the patient has recovered. The investigation report states that the individual did not work on a pig farm or any other pig-related business, nor did he work in the health care industry. Therefore, there is currently no clear source of infection. Regarding public health response measures, WHO It was explained that national authorities monitored the case and all close contacts.this WHO Notified of passing Confidential Alert and Response System European Commission (SART). Currently, further antigen identification of the virus is underway.he Zoonoses Center Veterinarians investigated but found no possible source of infection. Therefore, no animal monitoring or testing was performed. Almost no influenza viruses have been detected in the Netherlands, and apart from the cases reported so far, none are variants of the swine influenza A virus.

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