Not long.: Tetanus vaccines prevent lockjaw, a disease of horrible muscle spasms that is generally fatal. If you have already been properly vaccinated within the last 10 years, then you are probably protected unless the puncture wound is profoundly contaminated--prompting a need for a booster vaccine in 5 years. The symptoms of tetanus can occur as quickly as 3 days, although the average is 8 days.
army unit - a military unit that is part of an army. naval unit - a military unit that is part of a navy. air unit - a military unit that is part of the airforce. armour, armor - a military unit consisting of armored fighting vehicles. armed service, military service, service - a force that is a branch of the armed forces.
paramilitary unit - a group of civilians organized in a military fashion (especially to operate in place of or to assist regular army troops) paramilitary, paramilitary force, paramilitary organisation, paramilitary organization. fedayeen - (plural) Arab guerrillas who operate mainly against Israel.