The H7N9 virus, a mutation of three viruses, is nothing like the previous H5N1 avian influenza. This new H7N9 virus shows few, if any, visible symptoms in birds unlike the H5N1 which was very symptomatic wiping out large flocks. This ability to “hide”, making it much harder to track in farmed and wild avian populations, is of great concern to scientists and health officials.Since the H7N9 virus is virtually asystematic among the avian population it is impossible to know how far the virus has spread … “you can’t tell where it is without testing the birds directly” ~ Besser, USCDC.“The key to controlling the number of H7N9 patients depends on whether the virus can spread among human beings,” said Wu Fan, director of the Shanghai Municipal Center for Disease Control and Prevention, at a news conference last Friday, according to Xinhua. “So far we haven’t found any cases that show this kind of virus can spread from people to people.”
The World Health Organization (WHO) has confidence in China’s efforts to track and control the outbreak, its representative in Beijing – Dr Michael O’Leary, said, and was “very satisfied and pleased with the level of information shared”.
Click each balloon for more info on individual patients infected with the H7N9 avian flu virus:
Red – those infected with the H7N9 who have died.
Blue – patients infected with the H7N9 virus under treatment.
Pink – other types of the Influenza A virus, including H1N1.
Yellow – those who have fully recovered and were discharged from hospital.
Larger H7N9 Viral Outbreak Map