Experimental vaccination by single dose sporozoite injection of blood-stage attenuated malaria parasites.

Malaria vaccination approaches using live Plasmodium parasites are currently explored, with either attenuated mosquito-derived sporozoites or attenuated blood-stage parasites. Both approaches would profit from the availability of attenuated and avirulent parasites with a reduced blood-stage multiplication rate. Here we screened gene-deletion mutants of the rodent parasite P.

Dermatosis associated with Acarus farris in gerbils.

A dermatosis associated with Acarus farris is described in a group of three gerbils. Large number of an immature stage (hypopi) of the mite were found on hair pluck samples. Treatment and changes in management led to a resolution of the problem.