PCBs, cause of death and body condition in harbour porpoises (Phocoena phocoena) from British waters

Polychlorinated biphenyls (PCBs) suppress immunity, and may have exacerbated the effects of recent morbillivirus epizootics in harbour seals (Phoca vitulina) and striped dolphins (Stenella coeruleoalba). To test the hypothesis that PCBs cause immunosuppression in harbour porpoises (Phocoena phocoena) and increase their risk of dying from an infectious or parasitic disease, we compared the levels of PCBs in the blubber between animals that died...