A new recombinant H5N1 vaccine virus has been developed in China
and is available for researchers and companies that want to develop
or produce the H5N1 vaccine for human use, an official with the
Chinese Center for Disease Control and Prevention (CDC) said.
Shu Yuelong, senior official with Chinese CDC, said the new
vaccine virus was developed by the Chinese CDC and U.S. CDC from
the cases of human infections of the deadly virus in southern
China.
Researchers found that a newly isolated virus collected from
people infected with H5N1 in southern China was distinguishable in
terms of antigen from the viruses that had previously been selected
for vaccine development, Shu said.
Shu said it was the first time for China to develop a new human
H5N1 vaccine virus, which will be a great contribution to the
prevention of the fatal epidemic.
The World Health Organization (WHO) has put the new development
on its Web site and said it's available for "institutions,
companies and others interested in pandemic vaccine
development."
The cases of human infection with bird flu in China numbered 13
in 2006, and seven in 2005.
In August 2006, the WHO found that there was antigenic variation
among the recent H5N1 viruses. Since then, the WHO Collaborating
Centers and H5 Reference Laboratories have been developing several
new recombinant H5N1 vaccine viruses.
(China Daily January 8, 2007)