In 1798 the first smallpox vaccine was developed.Over the 18th and 19th centuries,systematic implementation of mass smallpox immunization culminated in its global eradication in 1979.
Answer: The only way to have intercourse safely is to use protection, and even sometimes its not ultimately guaranteed the woman won't become pregnant. If you don't use protection, the woman is most likely going to get pregnant, so either use protection or just don't have intercourse at all. Also make sure you are mature and old enough to have intercourse in the first place.
A possible answer could be the quality of air being inhaled
<span>If you have cold, high temperature, and headache then these symptoms mean you have a flu. You should not work because it can be contagious to others. You will end up in a bad presentation or work because you are not feeling well, furthermore it will just worsen your situation.</span>
