Ant no stopping us now: insect with potent bite continues march across US

Experts say Asian needle ant not especially dangerous' but warn some people have gone into anaphylaxis

Last year, Dan Suiter, a professor of urban entomology at the University of Georgia, received at least three calls from people who had been stung by an Asian needle ant - or knew someone who had been - and went into anaphylaxis, an allergic reaction that can be life-threatening.

While there is no new evidence on the continued spread of the ants in the US - detected now in 20 US states - Suiter and his colleagues are determined to raise public awareness of the risks the species poses.