Individuals who have a suppressed immune system are particularly susceptible to opportunistic infections. He is also extremely opportunistic and greedy. Killer whales are intelligent, versatile and opportunistic predators. Ramsay is vicious, ruthless, psychopathic, sadistic, opportunistic, unpredictable, and fearless. Some species may cause a range of opportunistic infections in humans. "Capnocytophaga" is a commensal genus considered as an opportunistic pathogen. With improved treatments and better prophylaxis against opportunistic infections, death rates have significantly declined. Human immunodeficiency virus (HIV) creates immunodeficiencies which allow opportunistic infections or neoplasms to proliferate. This weakens the immune system and allows opportunistic infections. Treatment also includes preventive and active treatment of opportunistic infections. TNF inhibitors put patients at increased risk of certain opportunistic infections. Measures to prevent opportunistic infections are effective in many people with HIV/AIDS. King mackerel are voracious, opportunistic carnivores. These impacts result in decreases in species diversity and ecological changes towards more opportunistic organisms. Most species will eat anything suitable that comes within reach and are also opportunistic scavengers.