Potential Vaccines Unlikely to Head Off Bird Flu Pandemic
Two stories have emerged on the influenza front, both dealing with potential vaccines — one specific to avian H5N1 flu and the other an all-around flu panacea.
U.S. government scientists say they have successfully tested in people a vaccine that they believe can protect against the strain of avian influenza that is spreading in birds in Asia and Russia. Health officials have been racing to develop a vaccine because they worry that, if the H5N1 strain mutates and combines with a human influenza virus to create a new virus, it could spread rapidly through the world.
Tens of millions of birds have died from infection and culling to prevent spread of the virus. As of Aug. 5 112 people have been infected, and 57 have died from the H5N1 strain of avian influenza. So far, there has been no sustained human-to-human transmission.
Dr. Anthony S. Fauci, director of the National Institute of Allergy and Infectious Diseases, said that while the vaccine that has undergone preliminary tests could be used on an emergency basis if a
pandemic developed, it would still be several months before that vaccine is tested further and, if licensed, offered to the public. He cautioned: “We don’t have all the vaccine we need to meet the possible demand. The critical issue now is, can we make enough vaccine, given the well-known inability of the vaccine industry to make enough vaccine.”
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