Concerns are being raised at the increasing prevalence of Scarlet Fever – which mostly affects under 16s. It is a Streptococcal infection, so the treatment is likely to be a course of antibiotics. As far as I’m aware there is no vaccine against Scarlet Fever.
Although not that common these days, compared with 100+ years ago, it is still around; and is highly contagious. Like measles (to which it is not related) it can be severe especially if there are complications. As an example, my late father had Scarlet Fever as a child in the 1920s; he spent 6 weeks in isolation hospital (remember this was before antibiotics), and had a heart arrhythmia for the rest of his life as a result.
Press report at https://www.thisislocallondon.co.uk/news/20052870.scarlet-fever-symptoms-parents-issued-warning-cases-rise-england/.