Some types of hpv cause people to have warts. for example, hpv 6 and 11. can some people carry these types without warts ?what is the rate of not have warts although have this strains?

Hard to know: People who develop genital warts may test for strains. Once these are cleared from the body naturally within 2 yrs or if they are removed, they may retain the virus for life, but not shed/transfer it. If you never develop warts, you would have no reason to test. We assume you don't get or transfer warts unless you are infected & these can be passed before you notice the tiny first bumps.

Most of them: Statistics: In US females, the highest prevalence of genital HPV infection is in 20- to 24-year-olds. Most infections are subclinical (without visible sign) and clear spontaneously within 2 years. Yet, infected individuals transmit virus primarily by skin-to-skin contact.