WHO malaria-free certification: what it takes and which countries have reached it

What malaria-free certification actually means

Malaria-free certification is a formal judgment by the World Health Organization about a country, not a claim by a company or a clinic. The WHO page on the certification process states that a country must prove the chain of local transmission of all human malaria parasites has been interrupted nationwide for at least three consecutive years. Three years is the floor, and the proof must cover the whole country rather than a single province. The same requirement appears in every certification announcement reviewed here. Certification also binds the country afterwards: it continues efforts to prevent re-establishment of transmission and reports annually to WHO to keep the status. Certification means transmission has stopped nationwide for three years, not that the parasite has left the country or that vigilance can end there.

The steps from application to official record

The route to certification is long and documented. According to the WHO certification process page, a country submits an official request to the WHO Director-General, then formulates an action plan and timeline with WHO. It finalises documentation and a national elimination report. The Technical Advisory Group on Malaria Elimination and Certification reviews that report and advises WHO on certification decisions. A WHO-established evaluation team makes field visits and produces an evaluation report. The advisory group reviews the mission report and recommends. The Malaria Policy Advisory Group then verifies that standard operating procedures were followed. The WHO Director-General makes the final decision and informs the government, and the certification is published in the Weekly Epidemiological Record.

The three conditions a country must hold

Certification criteria are broader than a run of zero cases. The WHO Regional Office for Africa news item on Algeria and Argentina sets out the full test: a country must prove interrupted indigenous transmission nationwide for three consecutive years, maintain an operational surveillance system for rapid case detection and response, and run an effective programme to prevent re-establishment of the disease. The last two conditions matter for public health. A country that stops counting cases cannot detect a return. A country without a response plan cannot contain one. Surveillance means laboratories, reporting, and staff who act on a positive result. Prevention means vector control and case investigation kept in place after the last known patient recovers.

Countries certified, and several recent examples

Numbers have grown steadily. WHO announced Georgia as malaria-free on 23 January 2025, bringing the total to 45 countries and one territory with that status. Six months later, on 24 July 2025, WHO certified Timor-Leste, which became the third certified country in the South-East Asia Region after Maldives in 2015 and Sri Lanka in 2016. At that point 47 countries and one territory had been certified by WHO. The WHO malaria fact sheet of 4 December 2025 records that 14 countries have been certified malaria-free since 2017. It also states that 37 countries reported fewer than 1 000 indigenous cases in 2024, a useful sign of the pipeline behind future certifications. A future certification depends on countries now reporting very few indigenous cases and on surveillance systems that can detect and respond to each one quickly.

How much work certification hides

The recent examples show how far a country can travel. The WHO item on Georgia reports that in the 1920s an estimated 30% of the population had malaria, mostly Plasmodium vivax, that large-scale mosquito control in the 1940s cut cases sharply, that malaria re-emerged in 2002 with 474 cases, and that the last indigenous case was in 2009. The Timor-Leste item records cases peaking above 223 000 in 2006 and zero indigenous cases from 2021 onwards. The Algeria and Argentina item recalls roughly 80 000 Algerian cases a year in the 1960s and a last indigenous Algerian case in 2013, while Argentina's last indigenous case was in 2010. These national histories show that elimination is possible even after severe epidemics and decades of sustained transmission, provided programmes persist through setbacks.

Tools that make elimination last

Elimination depends on ordinary tools used well. The WHO malaria fact sheet describes vector control with insecticide-treated nets and indoor residual spraying, chemoprophylaxis for travellers, preventive chemotherapy for vulnerable groups, and the RTS,S/AS01 and R21/Matrix-M vaccines recommended since October 2021 and October 2023. It states that WHO recommends parasitebased diagnostic testing through microscopy or a rapid diagnostic test, so that treatment follows a confirmed infection. The fact sheet also reports partial artemisinin resistance confirmed in Eritrea, Rwanda, Uganda and Tanzania. That finding is a reminder that progress is uneven and that drug and vector control choices need continued monitoring. Countries certified remain alert for imported cases that could restart local spread. Vaccines, nets, indoor spraying, preventive treatment and parasite-based testing all support elimination, but resistance monitoring must continue because progress is uneven.

What certification does not mean

A certificate is not a declaration that malaria has vanished from the planet. The WHO fact sheet reports 282 million malaria cases and 610 000 malaria deaths in 80 countries in 2024. The WHO African Region carried 95% of cases, about 265 million, and 95% of deaths, about 579 000, with children under 5 accounting for about 75% of deaths in that Region. A certified country can still see imported cases in travellers and must keep surveillance running to stop local transmission. The Georgia announcement notes that in 2015 all 53 countries of the WHO European Region reported zero indigenous cases, and Turkey remained the only country in the Region not yet certified. Global burden remains high, so certification should be read as national proof of interrupted local transmission rather than a statement that malaria no longer exists.

Sources

• Malaria elimination certification process: World Health Organization
• Georgia certified malaria-free by WHO: World Health Organization
• Timor-Leste certified malaria-free by WHO: World Health Organization
• Algeria and Argentina certified malaria-free by WHO: World Health Organization Regional Office for Africa
• Malaria, WHO fact sheet: World Health Organization