The recent appearance of the H5N1 bird flu in pigs does raise viral reassortment concerns. Here's what we know about this highly pathogenic avian influenza virus so far.

Britain has secured five million doses of H5 bird flu vaccine to prepare for a possible global pandemic, the UK Health Security Agency (UKHSA) announced today.

The developing avian influenza panzootic and the growing possibility of a pandemic bring to the fore the existential questions for humanity of climate change and the destruction of public health, both of which must be stopped in order to control the growing threats.

A World Health Organization official on Thursday called for stronger surveillance in animals for evidence of infection with H5N1 bird flu in order to curb its spread. The official also urged stronger efforts to reduce the risk of transmission of the virus to new species of animals and to humans.

The Centers for Disease Control and Prevention confirmed the first human case of avian influenza A(H5N1) in a child in California last week.

The UK is preparing over five million doses of an H5 influenza vaccine to counter any future bird flu pandemic. While the H5N1 strain currently shows no evidence of human-to-human