MOSCOW, May 10 (RIA Novosti) - The global caseload of A/H1N1 swine flu cases has reached 4,055, with a death toll of 48, the head of the Novosibirsk-based Vektor virology research center in southwest Siberia said on Sunday.

A total of 29 countries have officially reported confirmed cases of the A/H1N1 infection, Ilya Drozdov said, referring to data of the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC).

Despite the dramatic media reports that accompanied the recent outbreak of swine flu, leading scientists say the virus is a mild strain and only a further mutation would make it a serious threat. Swine flu deaths in Mexico, the worst hit by the virus, are around average for seasonal flu fatalities.

The WHO has said there is no risk of infection from the consumption of well-cooked pork and pork products.