Cambodia's confirmed A/H1N1 flu cases have increased to 21 on Monday, a health official said here Monday.

The latest cases were two Khmers who traveled from Hong Kong, but so far, nobody died of the virus in Cambodia, Sok Touch, director of Communicable Disease Control Department of Cambodian Health Ministry, told Xinhua. The two persons are receiving treatment in hospital and in a stable condition, according to Sok Touch.

Cambodia has tightened the monitoring and tracking system at two main airports, Phnom Penh International Airport and Siem Reap International Airport, by using thermal scanners.

Last month, Cambodia Health Ministry issued a call to appeal people not to travel to neighboring Thailand if they were not in urgent need.

Prime Minister Hun Sen last week also expressed his concern on the download of country's tourism, citing the affection of A/H1N1 flu and the world economic and financial crisis. However, Hun Sen ensured the foreign tourists that Cambodia is tightening security and social orders including strictly monitoring on the new flu to provide safety for all tourists.

Cambodia's first case of influenza A/H1N1 was confirmed on June 23, 2009.

(Xinhua News Agency August 4, 2009)