More than 100 chickens, geese, ducks and other birds at Hess-Hathaway Park in Waterford have been culled after some tested positive for H5N1 bird flu.

With reports of the first human death from bird flu in the US, some Americans are feeling an uncomfortable flashback to the early days of Covid-19, when infectious disease experts were talking about a new virus that was sending people to the hospital with respiratory infections.