Tanzania

Season running low

In 2026 so far, the reported cases are well below the expected number of cases. Cases are currently increasing, as expected at this time of the year based on trends in previous years.

Data refreshed: 18 October 2026

Dengue cases in 2026

Compare to

Some recent months include estimated values because official reports can arrive with delays.

Current year: Reported cases Current year: Estimated cases (reported cases not available) Uncertainty: 95% prediction interval (validation-calibrated)

Further analysis

In September 2026, Tanzania reported 14 dengue cases, well below what we would typically expect for this time of year.

Compared with August 2026, in which 10 cases were reported, this is a similar level of reported cases.

So far in 2026, the country has recorded 281 cases-about 0.2x the expected level-so the season is below average to date.

The last month with reported cases is August 2026.

In Tanzania the average peak month is January.