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Toxoplasmosis from domestic, wild cats is killing sea otters in Calif.

Wild sea otters are being infected by Toxoplasma gondii from the feces of domestic and wild cats, and some of the infections are fatal, researchers reported in Proceedings of the Royal Society B. T. gondii oocytes are carried to kelp forests in stormwater runoff, taken up by sea snails and passed on to sea otters that eat the snails, and the researchers say domestic cats should stay indoors and their feces bagged and disposed of in the trash, not flushed or left outdoors.

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