World Health Organization (WHO): One or Two Dose ?

World Health Organization : "There is a need for only one dose of vaccine to protect against flu , H1N1,And proved so far that these vaccine are safe...

The ongoing debate among health experts about whether a one dose or two doses necessary to protect against H1N1, known as swine flu, especially as the number of doses required is essential to estimate the number of adequate vaccines in general.
The WHO has repeatedly to reassure people in all parts of the world that the H1N1 vaccine, made by 25 different companies in different preparations is safe. Said Marie Paule Kieny, WHO expert: All reports received so far after immunization, both in clinical trials or vaccination campaigns have shown that the general safety of these vaccines for epidemics and well similar to a large extent, known as the vaccine for seasonal flu vaccine.
Said Kenny, who heads the Department of Vaccine Research, WHO, the UN, told reporters at a conference conducted over the telephone circuits: Note has not been anything special in terms of negative effects.