Old or late adulthood is the stage of growth in which diseases are easily and always present and sometimes due to weak immune system and other cause are chromatic diseases. Skin continues to lose elasticity, reflexes starts to slow and same with their reaction time. mobility and muscles strength begins to decrease, hearing and vision begins to dull. Mostly people with this age may have a lower function in their brain leading to intellectual diseases such as Alzheimer's disease.
I know one is to get tested. Another could be to use protection that could prevent that kind of stuff. Then if you're already infected, you should tell your partner. And if you do sleep with your partner while infected, tell them to get tested.
False! You should always wear a lifejacket on a boat, so learn to expect the unexpected.