BIOL 4141 Chapter : Disease Mammology 2014
Document Summary
Infec)ous diseases have mul)ple sources: viruses, bacteria, prions, and protozoans. Impairment to health: physiological or psychological imbalance, poor nutri)onal state, stressed state, infec)ons. Infec)ous diseases transmi?ed between animals and humans: wildlife may serve as hosts or vectors, cons)tute over 70% of emerging infec)ous diseases. Human- wildlife contact more common. Outdoor recrea)on and ecotourism are increasing. Zoonoses: three factors must be present for any disease to occur. Host must be suscep)ble to disease agent. Environmental condi)ons must promote pathogen stability and viability. Host and pathogen must come into contact rela)vely frequently. Parasites, diseases, and ex)nc)on: parasites generally do not kill their hosts, parasi)c diseases can lead to popula)on declines, parasite- caused ex)nc)ons. Occur in mul)- host parasites. Groups with domes)c mammals most suscep)ble (ar)odactyla and carnivora) Reducing contact between wild and domes)c mammals may minimize disease. Monkeypox virus: member of orthopoxvirus family. Creates skin lesions similar to smallpox. Humans infected via direct contact with infected animals.
