On Yahoo News an article has been posted stating that the World Health Organization was slow to respond to notifications about alarming occurrences of flu and pneumonia in Mexico.
Cases in Mexico may have started as early as late March. The World Health Organization was notified on April 9th of the Swine Flu H1N1 outbreak. But the WHO did not take action until laboratories in the U.S. and Canadian identified the virus. Which was on April 24.
This means that almost a month pasted from first notification until the first response action was taken.
It seems that nothing has changed in the past 25+ years. In the early 1980s the Center for Disease Control was notified of a strange illness that was killing gay men in different parts of the USA, but mostly in California. Very little to no action was taken until the virus was isolated. During that time the HIV continued to spread. And today, more then 21 million people have been killed by HIV and the complications caused by AIDS.