Virus particles per milliliter of blood

HIV ~ 1,000,000

Hepatitis C ~ 5,000,000

Ebola ~ 10,000,000,000

Chance of contracting AIDS or Hepatitis C from a needle stick ~ 1 in 200 or 0.5%

Chance of contracting Ebola from a needle stick ~ > 50%?

I've been stuck with AIDS needles 5 or 6 times in 27 years and had AIDS blood in my eyes once. Hep C sticks, at least a few times. Most times it was my fault, rushing or carelessness. One time a surgeon stuck me in a vein in my wrist during a surgery. Two times, it was the carelessness of others, leaving infected needles on a patient's bed.