"Someone who lived with a Missouri resident infected with bird flu also became ill on the same day, the Centers for Disease Control and Prevention reported on Friday. The disclosure raises the possibility that the virus, H5N1, spread from one person to another, experts said, in what would be the first known instance in the United States."
"Urban wet markets are fertile grounds for viral transmission, experts say. Outbreaks of bird flu have already occurred."
"The virus is poised to become a permanent presence in cattle, raising the odds of an eventual outbreak among people."
"A significant die-off of brown pelicans in California has scientists searching for answers."
"Like most countries, the U.S. has no comprehensive national system for monitoring disease in companion animals — which leaves pets and people at risk."
"The U.S. Department of Agriculture said on Tuesday it will expand bird-flu testing of beef entering the food supply as part of its response to the ongoing outbreak among dairy cattle, adding that U.S. beef and dairy products remain safe to consume."
"The world is currently seeing the fastest-spreading, largest-ever outbreak of H5N1, a highly contagious, deadly strain of avian influenza. Scientists say this virus now presents an existential threat to the world’s biodiversity, with the risk to humans rising as it continues to leap the species barrier, reaching new host species."
"Although health officials say the risk of H5N1 bird flu infection is still low for the general population, they announced on Monday a $5-million plan to offer seasonal flu vaccine to livestock workers."
"An Andean condor being treated in Chile with lead in its blood, a pellet embedded in its skull and a satellite tracker from Argentina highlights the challenges of conserving this endangered bird."
"Sparrows were taken into captivity after numbers dwindled – and this week experts released 1,000th bird back into wild".
Advertisement 
