Before future studies would uncover a link between Nipah outbreaks and the felling of native forests for the purposes of fruit plantations, more than 1 million pigs are culled to quell an outbreak that leads to the deaths of 105 people.

A version of the H5N1 virus that has killed one person and severely sickened another has been detected in milk samples collected from Nevada dairy herds.

The strain of bird flu is distinct from what has previously been found in dairy cattle. The finding raises some worrying questions — and concerns over the Trump administration's muted response.