What percent of cows in infected dairy herds were actually sick?
According to AVMA, less than 10%: link. It looks like that’s only the symptomatic animals though, so your answer might depend on how you define “actually sick.”
How did H5N1 spread from bird to cow if it requires fluids?
Cows occasionally eat birds. That might do it.
What does it need to get airborne?
I’m not sure this is the right question: as I understand it, the flu generally spread on fluids (mainly saliva), and if the droplets are small enough (< 5μm diameter), they get classified as aerosols and called airborne.
How sure are you that flu is generally spread through fluids? It seems like the medical system is ~prejudiced against the concept of airborne transmission.
According to AVMA, less than 10%: link. It looks like that’s only the symptomatic animals though, so your answer might depend on how you define “actually sick.”
Cows occasionally eat birds. That might do it.
I’m not sure this is the right question: as I understand it, the flu generally spread on fluids (mainly saliva), and if the droplets are small enough (< 5μm diameter), they get classified as aerosols and called airborne.
How sure are you that flu is generally spread through fluids? It seems like the medical system is ~prejudiced against the concept of airborne transmission.