We assessed standardized mortality ratio in tick-borne encephalitis (TBE) in Sweden, 2004-2017. Standardized mortality ratio for TBE was 3.96 (95% CI 2.55-5.90); no cases in patients <40 years of age were fatal. These results underscore the need for further vaccination efforts in populations at risk for TBE.
Keywords: Sweden; TBE; case-fatality rate; standardized mortality ratio; tick-borne encephalitis; ticks; vector-borne infections; viruses.