What is the trajectory of major infectious disease outbreaks in Bangladesh? National dengue cases, deaths, and CFR over time; COVID-19 daily and monthly transmission waves and test positivity; and national vaccination rollout by round.

Disease surveillance. Part of what the twin can answer. Every figure below is the value the route serves, with its source; the raw response is at /api/twin/brain/disease.

Descriptive, sourced: no model

Basis: sourced records (URL, sha256 or locator per row), no model.

The daily dashboards report at national, division, and city corporation level (DNCC, DSCC, Gazipur CC, Chattogram CC, plus outside CC per division). District-level hospital admissions were published in 2022 bulletins.

As of: Dengue: 17 September 2026; Covid: 1 June 2026; Vaccine: 15 December 2021.

Peak dengue year, 2023: 321,179; dghs dengue tables
Peak dengue month, October 2023: 67,769; dghs dengue tables
Dengue cases, latest season to 17 September 2026: 58,400; objectstorage.ap-dcc-gazipur-1.oraclecloud15.com/e0148b073491.pdf
COVID-19 cumulative deaths, 2022-01-01 to 2026-06-01: 29,531
Peak COVID month, February 2022, over 9 reported days: 45,162
COVID vaccine doses delivered, 2021-08-03 to 2021-12-15: 112,566,560

Dengue: the peak year, every year, and the latest season

Dengue by year: cases, deaths and fatality

Monthly rows are the held bulletins and dashboard charts for each month; 2026 is year-to-date through the last held month, not a full year.

Year	Cases	Deaths	Fatality	Peak month	Peak-month cases	Source
2022	Cases: 40,101	Deaths:

COVID-19: totals and the held monthly bulletins

Cumulative positives, 2022-01-01 to 2026-06-01: 2,052,280
Cumulative tests, 2022-01-01 to 2026-06-01: 15,739,606
Overall positivity, 2022-01-01 to 2026-06-01: 13.04%

COVID-19 by month, as the held bulletins report it

45,162 cases over 9 reported days of 28 in February 2022

Month	Reported days	Cases	Deaths	Tests

Vaccination rollout

First doses, 2021-08-03 to 2021-12-15: 67,836,837
Second doses, 2021-08-03 to 2021-12-15: 44,729,723

Sources

DGHS Dengue Press Releases and Dashboards, Annual Totals. sha256 b089d511b429; dataset disease_dengue_annual
DGHS Dengue Surveillance, Monthly Reported Cases and Deaths. sha256 86b00cd910c5; dataset disease_dengue_monthly
DGHS Dengue Surveillance, Division and City Corporation Breakdown. sha256 57e1aaad9714; dataset disease_dengue_division
DGHS COVID-19 Surveillance, Monthly Aggregated Positive Cases, Deaths, Tests. sha256 60c6ce3c2c65; dataset disease_covid_monthly
DGHS COVID-19 Daily Press Releases. sha256 3db91ca5b629; dataset disease_covid_daily
DGHS COVID-19 Vaccination Daily Press Releases. sha256 4cc5b3fd82dd; dataset disease_covid_vaccine_daily
DGHS COVID-19 Vaccination Campaign Cumulative Totals by Vendor and Round. sha256 0324dedaa499; dataset disease_covid_vaccine_summary

Division or city corporation	Cases	Deaths	Fatality
Dhaka (Out of CC)	Cases: 9,696	Deaths: 10	Fatality: 0.1%
Khulna	Cases: 9,564	Deaths: 32	Fatality: 0.33%
Chattogram	Cases: 8,298	Deaths: 16	Fatality: 0.19%
Barishal	Cases: 8,265	Deaths: 13	Fatality: 0.16%
DSCC	Cases: 7,102	Deaths: 51	Fatality: 0.72%
DNCC	Cases: 6,765	Deaths: 23	Fatality: 0.34%
Rajshahi	Cases: 3,556	Deaths: 8	Fatality: 0.22%
Mymensingh	Cases: 3,220	Deaths: 18	Fatality: 0.56%
Rangpur	Cases: 1,663	Deaths: 4	Fatality: 0.24%
Sylhet	Cases: 271	Deaths: 1	Fatality: 0.37%

January 2022	Reported days: 1	Cases: 370	Deaths: 4	Tests: 15,214	Positivity: 2.43%
February 2022	Reported days: 9	Cases: 45,162	Deaths: 208	Tests: 289,732	Positivity: 15.59%
March 2022	Reported days: 15	Cases: 2,920	Deaths: 37	Tests: 180,265	Positivity: 1.62%
April 2022	Reported days: 21	Cases: 850	Deaths: 5	Tests: 117,556	Positivity: 0.72%
May 2022	Reported days: 13	Cases: 242	Deaths: 1	Tests: 49,316	Positivity: 0.49%
June 2022	Reported days: 11	Cases: 6,238	Deaths: 4	Tests: 76,512	Positivity: 8.15%
July 2022	Reported days: 3	Cases: 4,792	Deaths: 14	Tests: 31,568	Positivity: 15.18%
November 2022	Reported days: 21	Cases: 858	Deaths: 5	Tests: 64,391	Positivity: 1.33%
December 2022	Reported days: 23	Cases: 394	Deaths: 6	Tests: 52,844	Positivity: 0.75%
January 2023	Reported days: 27	Cases: 371	Deaths: 2	Tests: 70,585	Positivity: 0.53%
February 2023	Reported days: 21	Cases: 204	Deaths: 2	Tests: 42,667	Positivity: 0.48%
March 2023	Reported days: 23	Cases: 144	Deaths: 1	Tests: 34,856	Positivity: 0.41%