./ Infected blood or body fluids/ Contact with infected material
/ Infected blood or tissue/ Unprotected sex, shared needles
/ Airborne/ Change of virus
Bacteria
/ Undercooked beef/ Poor food preparation, contaminated food products
/ Deer ticks/ Increased settlement and visits to forested areas
/ Patient spread/ Poverty, antibiotic resistance, HIV/AIDS epidemic
(Staphylococcus aureas, andStreptococcus pneumoniae)/ Human contact/ Poor hygiene and infection control, unsterile instruments, sick patients
Parasites
/Contaminated
water/ Poor treatment of water systems
/ Mosquito bites/ International travel, drug resistance
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