High transmission* (cases per 100 people over 5 months) | Low transmission* (cases per 100 people over 7 months) | |||||||
2018 risk | 2019 risk | 2020 risk | RD 2019 vs 2018 | RD 2020 vs 2018 | 2018 risk | 2019 risk | RD 2019 vs 2018 | |
Age group | ||||||||
<5 years | 76.5 | 46.4 | 59.7 | −30.2 | −16.8 | 46.5 | 38.4 | −8.0 |
≥5 years | 16.9 | 11.6 | 17.0 | −5.3 | 0.1 | 8.8 | 7.4 | −1.4 |
All ages | 25.6 | 16.7 | 23.2 | −8.9 | −2.4 | 14.3 | 11.9 | −2.4 |
Insecticide type | ||||||||
IRS | 46.1 | 17.0 | 20.0 | −29.1 | −26.1 | 44.0 | 34.4 | −9.6 |
Pyrethroid | 26.8 | 20.5 | 28.6 | −6.3 | 1.9 | 14.3 | 13.0 | −1.3 |
PBO | 28.6 | 11.2 | 22.4 | −17.4 | −6.2 | 18.8 | 9.7 | −9.1 |
Pyrethroid/IRS | 22.8 | 19.7 | 8.2 | −3.2 | −14.6 | 14.1 | 15.8 | 1.8 |
No data | 7.8 | 4.5 | 6.2 | −3.3 | −1.6 | 3.4 | 3.5 | 0.0 |
CIs were precise to one-tenth of a percent due to the thousands of individuals included in each age group.
High transmission estimates represent 5-month risks, low transmission estimates represent 7-month risks.
*High transmission season: January to May; low transmission season: June to December.
IRS, indoor residual spraying; PBO, piperonyl butoxide; RD, risk difference.