A tick that is making people become allergic to meat is spreading across the United States, with one ecologist saying climate change could be to blame.
The Lone Star tick has a single white dot on the back of females, and is spreading across the US with cases recorded in areas such as New York and Jersey, according to a report.
The tick transmits a molecule - otherwise known as an alpha-gal - that's normally found in mammals they have fed on to people they bite.
