In Cambodia, an 11-year-old boy from Kampong Speu province died of H5N1 human avian influenza today, becoming the fourth human death from the virus so far this year. The country’s Ministry of Health, in a press statement, said the boy was positive for the H5N1 virus.

According to queries, chickens and ducks near the patient’s house had gotten sick and died a week before the boy fell ill. Health authorities are looking into the source of the infection and examining any suspected cases or people who have been in contact with the victim in order to prevent an outbreak in the community.

H5N1 influenza is a flu that normally spreads between sick poultry, but can sometimes spread from poultry to humans. Its symptoms include fever, cough, runny nose, and severe respiratory illness.