According to the latest World Health Organization (WHO) figures, the A/H1N1 influenza has spread to the most remote parts of the world including Pacific, Caribbean and Indian Ocean islands.

More than 20 countries and overseas territories have had their first lab-confirmed A/H1N1 flu cases, according to the snapshot published by the WHO on Monday.

These countries and territories include holiday destinations such as the Seychelles, Turks and Caicos, St. Kitts and Nevis, Netherlands Antilles, Belize and France's Reunion Island, as well as isolated spots such as Tonga and American Samoa in the Pacific and the Solomon Islands in the Indian Ocean.

Afghanistan and Sudan have also had their first confirmed infections in recent days.

The A/H1N1 flu has caused a total of 816 deaths worldwide, according to the WHO's latest tally on Monday.

But the total number of people infected with H1N1 flu is not known, as countries are no longer required to test and report individual cases.

(Agencies via Xinhua July 28, 2009)