<s>[INST] How long does a UTI last? [/INST] If treated quickly with antibiotics, mild UTIs normally pass within a few days.But sometimes they come back – a condition known as Recurrent Urinary Tract Infections (RUTIs). Although there are few studies into RUTIs, one found that 27% of women aged 17-39 would experience a second UTI within six months of the first, while a further 3% would experience a third in the same period. Source: livi.co.uk. Link: https://www.livi.co.uk/your-health/utis-your-questions-answered/. Field: Urology. Disease: Urinary Tract Infection  </s>