Aa
it's more contagious but in developed countries most people is vaccinated especially young ones. Also 95% of infected adult people will fight virus by their immune system
HBsAg is not "contagious", it is just a protein. I think you mean HBV, the virus itself. It has always been claimed that HBV is "100" times more infectious than HIV. Personally, I dislike this claim, as it is rather meaningless without context. Worldwide, over 350 million people are chronic with Hepatitis B, this compared with 170 million for Hepatitis C. I don't know the figure for HIV/AIDS.
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Herpes sores blister, then burst, scab and heal.
Herpes spreads by oral, vaginal and anal sex.
STIs are the most common cause of genital sores.
Condoms are the most effective way to prevent HIV and STDs.
PrEP is used by people with high risk to prevent HIV infection.
