PHNOM PENH -- The Cambodian Health Ministry and the World Health Organisation (WHO) issued a joint statement on Tuesday reporting that two new human cases of the H5N1 virus have been confirmed in Cambodia, raising the nation's total number of cases this year to 16. The statement said one of the new cases involved a nine-year old boy from the province of Battambang. He was admitted to Jayavarman VII Hospital on August 4 and was confirmed to have contracted the human H5N1 avian influenza virus last Friday. The patient is currently in stable condition. The other case involved a five-year old girl from the province of Southern Kandal. She was admitted to the Kantha Bopha Hospital last Friday and was confirmed positive for the H5N1 virus the next day. According to the statement, the girl is in a critical condition. Apparently, both patients came in contact with sick or dead poultry before falling ill. Cambodia is currently facing its worst H5N1 outbreak since the virus was first detected in 2004. To date, health authorities in the country have recorded 37 human cases and 28 fatalities.