Cambodia Confirms Two Human H5N1 Cases This Year

Cambodia's health authorities have reported two human cases of H5N1 avian influenza this year, occurring in Kampot and Banteay Meanchey provinces. Both individuals had contact with sick or deceased poultry, and one patient has since recovered. Health officials are actively investigating the sources of infection and tracing contacts to prevent further spread.

Details of the Cases

The first confirmed case involved a 30-year-old man from Meanrith village in Tuek Chhou district, Kampot province, located in southwest Cambodia. He presented with symptoms including fever, cough, and abdominal pain.

Investigations by health authorities revealed the presence of dead chickens at his residence, which were reportedly cooked three days prior to the man falling ill. The patient received treatment and has since recovered, being discharged for home care.

The second human case involved a 45-year-old woman in Ropak village, Preah Netr Preah district, Banteay Meanchey province. This case was confirmed by the National Institute of Public Health on a Saturday. The woman had raised chickens and ducks, some of which had become ill and died. She tested positive three days after direct contact with the deceased poultry.

Public Health Response

Following the confirmation of both cases, health authorities initiated investigations to determine the source of the infections.

Efforts are underway to identify any suspected cases and individuals who had contact with the patients, with the objective of preventing potential community transmission or outbreaks.

For direct contacts of the first patient, the antiviral medication Tamiflu (oseltamivir) was distributed as a precautionary measure.

Understanding H5N1 Avian Influenza

Avian influenza is caused by influenza viruses that primarily affect birds and poultry. Transmission to humans typically occurs through direct or close contact with infected live or dead birds and poultry, their droppings, or contaminated environments. Human-to-human transmission is generally considered inefficient. Individuals with close contact to poultry are at a higher risk of contracting the virus.

In humans, symptoms of H5N1 avian influenza can range from mild flu-like illness, including fever, cough, sore throat, and muscle aches, to severe respiratory illness. Eye infections and gastrointestinal symptoms have also been reported. The incubation period for H5N1 usually ranges from 7 to 10 days.

More virulent forms of the virus can lead to severe complications such as respiratory failure, multi-organ failure, and death. Vulnerable populations, including the elderly, children, and those with chronic illnesses, face an increased risk of developing complications such as bronchitis and chest infections.