RecordWeek 20 of 2026 (11–17 May)Outbreaks
Kerala: 6 hepatitis A and E outbreaks in week 20 of 2026, the most since week 28 of 2025.
What happened
- Week 20 of 2026
- 6
- 2025-W28
- 6
Why it matters
A record says how long it has been since the series was this high or this low. It puts a single value in the context of the whole published history.
For hepatitis A and E outbreaks, neither a rise nor a fall is better in itself, so the observatory marks this movement as unusual rather than good or bad.
Historical context
43 consecutive earlier weeks were lower.
The underlying data
| Period | Value | Release | Where in the document |
|---|---|---|---|
| Week 20 of 2026 | 6 | IDSP weekly outbreak report, 2026 week 20 (2026-05-11 to 2026-05-17) | IDSP weekly outbreak report 2026-W20, count over 6 rows for Kerala: p.11 KL/KAN/2026/20/786, p.12 KL/KOT/2026/20/788, p.13 KL/MAL/2026/20/791, p.14 KL/MAL/2026/20/792, p.14 KL/MAL/2026/20/794, p.24 KL/MAL/2026/20/817 |
| Week 28 of 2025 | 6 | IDSP weekly outbreak report, 2025 week 28 (2025-07-07 to 2025-07-13) | IDSP weekly outbreak report 2025-W28, count over 6 rows for Kerala: p.15 KL/KOT/2025/28/1248, p.15 KL/KOT/2025/28/1249, p.16 KL/KOZ/2025/28/1250, p.17 KL/PAL/2025/28/1252, p.17 KL/PAL/2025/28/1253, p.17 KL/PAL/2025/28/1254 |
Source and method
More signals for hepatitis A and E outbreaks in Kerala
- Kerala: 14 hepatitis A and E outbreaks in the 4 weeks to week 21 of 2026, against a median of 6 for the same weeks in 2023–25.
- Kerala: 15 hepatitis A and E outbreaks in the 4 weeks to week 20 of 2026, against a median of 6 for the same weeks in 2023–25.
- Kerala: 8 hepatitis A and E outbreaks in the 4 weeks to week 5 of 2026, against a median of 3 for the same weeks in 2023–25.
- Kerala: 10 hepatitis A and E outbreaks in the 4 weeks to week 51 of 2025, against a median of 3 for the same weeks in 2022–24.
- Kerala: 9 hepatitis A and E outbreaks in the 4 weeks to week 50 of 2025, against a median of 2 for the same weeks in 2022–24.
- Kerala: 9 hepatitis A and E outbreaks in the 4 weeks to week 49 of 2025, against a median of 3 for the same weeks in 2022–24.
Cite this
According to the India Health Observatory, Kerala: 6 hepatitis A and E outbreaks in week 20 of 2026, the most since week 28 of 2025. Source: Integrated Disease Surveillance Programme, National Centre for Disease Control, MoHFW, IDSP weekly outbreak report, 2026 week 20 (2026-05-11 to 2026-05-17). https://indiahealthobservatory.com/signals/hepatitis-outbreaks--kerala--2026-w20--record
See also Kerala and 6 in context.