Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,444 questions · 1,518 findings · 135 reviews · Infectious Diseases

No studies found 135 · 8.9%GRADE not reported 150 · 9.9%Very low 350 · 23.1%Low 420 · 27.7%Moderate 321 · 21.1%High 142 · 9.4%

Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Any STH prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in any STH prevalence compared with no WASH intervention (moderate certainty).

1 finding from 1 review

Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Ascaris lumbricoides prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in ascaris lumbricoides prevalence compared with no WASH intervention (moderate certainty).

1 finding from 1 review

Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Trichuris trichiura prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in trichuris trichiura prevalence compared with no WASH intervention (low certainty).

1 finding from 1 review

Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Hookworm prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in hookworm prevalence compared with no WASH intervention (moderate certainty).

1 finding from 1 review

Non‐pyrethroid‐like indoor residual spraying (IRS) plus insecticide‐treated nets (ITNs) vs ITNs alone

Malaria incidence · people at risk of malaria

Non‐pyrethroid‐like indoor residual spraying (IRS) plus… showed no clear difference in malaria incidence compared with ITNs alone (low certainty).

1 finding from 1 review

Non‐pyrethroid‐like indoor residual spraying (IRS) plus insecticide‐treated nets (ITNs) vs ITNs alone

Malaria parasite prevalence · people at risk of malaria

Non‐pyrethroid‐like indoor residual spraying (IRS) plus… leads to lower malaria parasite prevalence compared with ITNs alone (high certainty).

1 finding from 1 review

Non‐pyrethroid‐like indoor residual spraying (IRS) plus insecticide‐treated nets (ITNs) vs ITNs alone

Anaemia prevalence · people at risk of malaria

Non‐pyrethroid‐like indoor residual spraying (IRS) plus… showed no clear difference in anaemia prevalence compared with ITNs alone (low certainty).

1 finding from 1 review

Pyrethroid‐like indoor residual spraying (IRS) + insecticide‐treated nets (ITNs) vs ITNs alone

Malaria incidence · people at risk of malaria

Pyrethroid‐like indoor residual spraying (IRS) + insecticide‐treated… showed no clear difference in malaria incidence compared with ITNs alone (moderate certainty).

1 finding from 1 review

Pyrethroid‐like indoor residual spraying (IRS) + insecticide‐treated nets (ITNs) vs ITNs alone

Malaria parasite prevalence · people at risk of malaria

Pyrethroid‐like indoor residual spraying (IRS) + insecticide‐treated… showed no clear difference in malaria parasite prevalence compared with ITNs alone (moderate certainty).

1 finding from 1 review

Pyrethroid‐like indoor residual spraying (IRS) + insecticide‐treated nets (ITNs) vs ITNs alone

Anaemia prevalence (haemoglobin < 8 g/dL) · people at risk of malaria

Pyrethroid‐like indoor residual spraying (IRS) + insecticide‐treated… showed no clear difference in anaemia prevalence (haemoglobin < 8 g/dL) compared with ITNs alone (low certainty).

1 finding from 1 review