Hi and thanks for the query, The meningitis vaccine you take certainly created some degree of immunity, against the commonest germ that causes bacteria in adults. However, it does not exclude the fact you could still get meningitis from other strains of bacteria. The frequency of getting meningitis also depends on the individual s immune system. Lack of a chronic disease that reduces body s immunity renders possibility of infectious meningitis lower. Guillain Barre syndrome is a rare condition, seen in less than 1/100.000 population, and is generally associated to gastrointestinal infections due to some bacteria like Campylobacter jejuni. This ascending neurologic disease has been described with some vaccines, but in this case, your possibility of getting this syndrome is exceptionally very very low. However, you can watch out for signs like weakness of tingling at the levels of the limbs, in case you experience any of these, do not hesitate to contact your primary care physician. The pain or swelling after a vaccine shot might take up to a few days to get back to normal depending on the individual in question. More severe symptoms might be observed in some people.In this case, analgesics to reduce pain or fever if presence, in addition to Non steroidal anti inflammatory drugs are usually sufficient. thanks and best regards, Luchuo, MD.