Costa Rican Health Ministry on Friday ruled out 125 cases of A/H1N1 flu after further lab tests.

Health Minister Maria Luisa Avila told Xinhua that there were still 53 samples of suspected cases to be analyzed, and among them two were "highly possible" cases.

"The Centers for Disease Control from the US (CDC) told us that the results could be ready in the coming 48 hours," Avila said.

Avila said the health authorities were on around-the-clock alert for new possible cases of the lethal flu in Costa Rica, adding that the country has bought more than 50,000 anti-virals to counteract the virus.

According to the World Health Organization, Costa Rica has two suspected cases of the flu.

(Xinhua News Agency May 2, 2009)