EVR 1001 Lecture Notes - Lecture 34: Bovine Spongiform Encephalopathy, Viral Hemorrhagic Fever, Influenza A Virus Subtype H5N1
Document Summary
3 categories of human health risks: physical, biological, chemical: physical: natural disasters, accidents, excessive radiation exposure, biological: disease, impairments of body functions, chemical: exposure to naturally occurring chemicals and anthropogenic chemicals. The majority of deaths worldwide are due to diseases- cardiovascular and infectious. Infectious diseases: those caused by infectious agents, known as pathogens, such as pneumonia, typhoid, stds, etc. Ch(cid:396)o(cid:374)i(cid:272) diseases: slo(cid:449)ly i(cid:373)pai(cid:396) the (cid:374)o(cid:396)(cid:373)al fu(cid:374)(cid:272)tio(cid:374)i(cid:374)g of the pe(cid:396)so(cid:374)"s (cid:271)ody (cancer, asbestosis) A(cid:272)ute diseases: (cid:395)ui(cid:272)kly effe(cid:272)t fu(cid:374)(cid:272)tio(cid:374)i(cid:374)g of a pe(cid:396)so(cid:374)"s (cid:271)ody (ebola, zika) 1. 5 million deaths per year, can be cured by antibiotics and vaccine. Emergent diseases: hiv/aids, ebola, mad cow disease, bird flu, west nile virus, zika. Hiv/aids: over 33 million are now infected, and 25 million people have died from aids. Ebola: a rare virus found in central africa that causes hemorrhagic fever. Mad cow disease: caused by protein particles (prions); can be transmitted by eating parts of the central nervous system of infected cattle.
