Hundreds of people in Ha Tinh experience itching due to flea infestation alert
Fleas are parasites that live on the skin of their hosts, that is, on the skin of mammals, birds, and even humans. Fleas spread plague around the world in the 14th century. Fleas are vectors of disease, and in 14th century Europe caused one of the worst plague epidemics in human history. Photo: shutter stock. … Read more