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Insecticide-treated nets (ITNs)

Intervention ID: int_itn
Evidence strength: exceptionally_strong
Causes: cause_malaria, cause_global_health_life_saving

Mechanism

Distribute long-lasting insecticide-treated nets.

Organizations in this catalog

• org_amf_drc_2027
• org_nothing_but_nets
• org_global_fund_malaria
• org_gates_malaria
• org_givewell_top_charities_fund
• org_against_malaria_foundation
• org_unicef_malaria

Citations (public evaluator pages)

• https://www.givewell.org/charities/amf
• https://www.givewell.org/charities/top-charities

Evidence notes

GiveWell rates evidence of impact for mass ITN distribution as exceptionally strong; many high-quality studies consistently find strong impact (AMF review; Top Charities page).

Key uncertainties

• Duration of protection from ITNs and insecticide resistance in GiveWell-funded locations (GiveWell AMF review).
• Uncertainty about AMF post-distribution monitoring correspondence and net durability vs independent literature (GiveWell AMF review).
• Limited published data on other funders’ non-net costs for AMF-supported campaigns (GiveWell AMF review).

Fungibility notes

GiveWell adjusts for the chance other malaria funders would fill ITN gaps without AMF; AMF tracks Global Fund/PMI spending to assess genuine gaps (GiveWell AMF review).

Cost-effectiveness notes (do not treat as verified without citation_urls)

GiveWell 2022-2024 avg ~$5500/life; ~$6/net (AMF).

Agents must look up data/claims_index.json and cite citation_urls before stating numbers.

Provenance

See docs/evaluation-provenance.md and data/graph/evaluations_graph.json.

last_reviewed: 2026-10-01