Is the streptococcal vaccine also indicated in adults? If yes, for whom? Does it have to be repeated? If yes, how often?

Is the streptococcal vaccine also indicated in adults?  If yes, for whom?  Does it have to be repeated?  If yes, how often?


Dear reader,

not knowing which type of strep it refers to, I will try to explain by first of all making a distinction. If it refers to the Streptococcus pneumoniae, what is usually called pneumococcus, there are vaccines (against 15 and 20 different serotypes, and in the future we will also have one against 21 serotypes). They are indicated in people aged 65 and over, or at any age if there is a chronic pathology (heart, liver, kidney, diabetes, etc.). These vaccines can be given at any time of the year and do not need to be repeated every year: their protection is expected to last a long time, and only after many years a booster may be necessary.

Then there are other types of streptococci, against which there is no vaccine yet. A common type of strep is Streptococcus pyogenes, frequently hosted by the human species, especially on the nasal mucosa, which causes the very common pharyngitis, but which can also cause more serious infections, such as rheumatic fever, nephritis, endocarditis, up to sepsis. Another type of streptococcus is Streptococcus agalactiae, whose infection is rarer, but potentially very serious in the elderly and newborns, because it can cause postpartum sepsis and meningitis. We hope that research on new vaccines will soon provide preventive tools against these other types of dptreptococcus as well.

Send your questions to [email protected]

*Paolo Bonanni is professor of Hygiene at the University of Florence.

The information provided is intended for informational purposes only: it does not represent medical advice in any way and cannot replace diagnoses or treatment indications recommended by your doctor or a specialist.



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