Cross-contamination refer to a condition where microorganisms are unintended transferred from one subject to another and causing harmful effect to them
One thing that is NOT an example of cross-contamination is : food is prepared one day in advance
Only condoms can protect against an STI. Only condoms have been proven to reduce the risk of getting some STDs. According to the HHS Office on Women's Health, the male latex condom is the best method for protecting against STDs, including HIV/AIDS. Polyurethane condoms are an effective alternative if either partner has a latex allergy.