Why isn fresh sperm available anymore at most sperm banks?
The semen from a donor could be infectious for a disease such as AIDS or Hepatitis at the time of its donation, and several months could pass before any tests or symptoms would reveal its presence. Most sperm banks freeze and quarantine the sperm for about six months while the donor undergoes repeated testing for these diseases. Specimens are only released when tests have remained negative for at least 180 days since the donation.
