GENEVA (Reuters/AFP) - H1N1 pandemic flu is spreading in India, Thailand and Vietnam with the onset of Asia's monsoon season, the World Health Organisation (WHO) said on Tuesday. But transmission of the new virus appears to have peaked in parts of the southern hemisphere including Argentina, Chile, Australia and New Zealand, the United Nations agency said. Some 177,457 cases of the virus commonly known as swine flu, including 1,462 deaths, have been officially reported worldwide as of August 6, but the true number of infections is certainly much higher, it said. "We are seeing the spread of the pandemic being reported in many of the tropic countries. And in Asia, particularly in India, Thailand and Vietnam. Also we're getting into the monsoon season in those countries at this time," WHO spokeswoman Aphaluck Bhatiasevi told a news briefing in Geneva. The regular influenza season has begun in the three countries, coinciding with the monsoon season, and both H1N1 and seasonal flu are being detected, she said. "Thailand has reported widespread influenza-like illness and it is increasing. In Vietnam and India there is an increasing trend but it is not yet widespread," Bhatiasevi told Reuters. India's Health Ministry last week confirmed the country's first death from H1N1, a 14-year-old girl. The H1N1 flu outbreak, declared a pandemic on June 11, has spread around the world since emerging in April and could eventually affect 2 billion people, according to WHO estimates. "In temperate areas of the southern hemisphere - Argentina, Chile, Australia and New Zealand - pandemic virus transmission appears to have peaked and is now on the decline in areas previously affected," WHO spokeswoman Fadela Chaib told reporters. Countries are now only obliged to report their first confirmed cases to WHO, which says there is no longer any point to counting each infection as the virus is unstoppable. Brazil's swine flu death toll has soared to almost 200, Health Minister Jose Temporao said Tuesday. His new figure of 192 is double the figure given by the health ministry last Wednesday, although a tally of individual states last week already gave 132 deaths. Our Monitoring Desk adds: A 33-year-old man succumbed to the deadly H1N1 virus on Tuesday night at a hospital in Kerala, India, taking the swine flu death toll in the country to 11. Wilson, who had returned from the Gulf, was hospitalised six days ago and was put on ventilator support a day after he was in hospital. The patient had recently visited Tamil Nadu before returning to Kerala, PTI reported. Dr Anoop, who treated the patient, told PTI that even at the time of his admission, Wilson was suffering from high fever and his throat swab was sent for examination to the National Institute of Virology in Pune.