HONG KONG, July 19 (Xinhua) -- The A/H1N1 flu is still spreading in Asia Pacific region though the World Health Organization (WHO) has stopped tracking A/H1N1 cases.

    Japan's tally of A/H1N1 infections has exceeded 4,000, said the Health, Labor and Welfare Ministry on Sunday.

    According to the ministry, there have been no serious cases reported since the first infections in Japan were confirmed in May.

    On May 9, three Osaka males were confirmed to be infected with the new A/H1N1 flu and they became the first confirmed cases of the new strain of influenza in Japan. And the number of the new-flu infections has been on the rise ever since.

    The World Health Organization (WHO) said Thursday that it would stop tracking A/H1N1 cases as the pandemic was the fastest growing ever and it was pointless to count each case.

    But the WHO called on countries to continue to report clusters of severe cases or deaths caused by the new virus or unusual clinical patterns.

    In Myanmar, the second flu-infected patient has been discharged from hospital after receiving intensive medical care, the official newspaper New Light of Myanmar reported Sunday.

    Myanmar reported the first case of new flu A/H1N1 in the country on June 27 with a 13-year-old girl who developed the symptoms after coming back home from Singapore a day earlier.

    So far, the authorities have given medical check up to over 2 million people at airports, ports and border check points and examined those suspicious of the deadly disease since the outbreak in Mexico on April 28, it said.

    Of the 49 people who underwent laboratory test, four were found infected with A/H1N1 virus, it claimed, saying that the four human flu cases are all imported ones.

    The authorities continue to take preventive measures against the possible spread of the global human flu pandemic, advising all private clinics in the country to report or transfer all flu-suspected patients, who returned from abroad, to local state-run hospitals or health departments for increased surveillance.

    China's Macao reported 14 newly confirmed cases of Influenza A/H1N1 on Sunday, bringing the total number of such cases in the region to 121.

    The newly confirmed cases included 12 men and two women whose age ranged from five to 44, according to Macao's Health Bureau.

    According to the statistics from the Bureau, some 30 patients who tested positive for the virus were still receiving medical treatments at local hospitals to date, and their health conditions remained stable.

    Hong Kong government's Department of Health confirmed 66 new cases of influenza A/H1N1 in the past 24 hours up to 2:30 p.m. on Sunday, which brings the total number of confirmed cases to 1,810 in the city.

    The new cases involve 35 males and 31 females, aged between 1 and 60 years, said the department.

    Among the confirmed cases, 33 patients are currently staying in public hospitals for treatment, including 26 in stable condition, two in serious and five in critical condition.

    According to the Hospital Authority, the eight designated Flu Clinics on Sunday provide treatment to a total of 348 patients.