They stopped calling the flu shot a vaccine because it does not effectively prevent symptomatic infection. Vaccines are designed to build antibodies against any particular disease/virus that prevent you from symptomatic infections. This so called vaccine does not. If you look at data from Israel, Italy and the UK there is no difference between the vaccinated and the unvaccinated. Natural immunity is far and away more protective than the vaccine. And there is reason to believe that the vaccine actually weakens the natural immunity in people who have had covid, recovered and received the vaccine. The vaccine is believed to keep you from becoming severely ill, but will not protect you from contacting or spreading the virus. It's a shot. Hell, three shots. Maybe 4, then 5, then.....