10 facts on malaria
Updated December 2016
Nearly half of the world's population is at risk of malaria. In 2015, there were roughly 212 million malaria cases and an estimated 429 000 malaria deaths. Increased prevention and control measures have led to a 29% reduction in malaria mortality rates globally since 2010. Sub-Saharan Africa continues to carry a disproportionately high share of the global malaria burden. In 2015, the region was home to 90% of malaria cases and 92% of malaria deaths.
Sven Torfinn/WHO 2016
Fact 1: Malaria is caused by parasites that are transmitted to people through the bites of infected mosquitoes
Malaria is caused by Plasmodium parasites that are spread to people through the bites of infected Anopheles mosquito vectors. Of the 5 parasite species that cause malaria in humans, Plasmodium falciparum is the most deadly.
S Hoibak
Fact 2: Nearly half of the world's population is at risk of malaria
In 2015, there were an estimated 212 million malaria cases and some 429 000 malaria deaths. Young children, pregnant women and non-immune travellers from malaria-free areas are particularly vulnerable to the disease when they become infected.
WHO/C Black
Fact 3: Children under 5 are at high risk of malaria
In areas with high transmission of malaria, children under 5 are particularly susceptible to infection, illness and death. More than two thirds (70%) of all malaria deaths occur in this age group. In 2015, about 303 000 African children died before their fifth birthdays.
WHO/C Black
Fact 4: Malaria mortality rates are falling
Increased malaria prevention and control measures are dramatically reducing the malaria burden in many places. Since 2010, malaria mortality rates have fallen globally by 29% among all age groups, and by 35% among children under 5.
Vlad Sokhin/WHO 2016
Fact 5: Early diagnosis and prompt treatment of malaria prevents deaths
Early diagnosis and treatment of malaria reduces disease and prevents deaths. It also contributes to reducing malaria transmission. Access to diagnostic testing and treatment should be seen not only as a component of malaria control but as a fundamental right of all populations at risk.
Vlad Sokhin/WHO 2016
Fact 6: Emerging artemisinin resistance is a major concern
Parasite resistance to artemisinin, the core compound in WHO-recommended combination treatments for uncomplicated malaria, has been detected in 5 countries of south east Asia: Cambodia, Laos, Myanmar, Thailand and Viet Nam. However, artemisinin-based combination therapies remain effective in almost all settings, as long as the partner drug in the combination is locally effective.
CENCET
Fact 7: Sleeping under insecticide-treated mosquito nets protects against malaria
Long-lasting insecticidal nets provide personal protection against mosquito bites. They can be used as protection for people most at risk of malaria, such as young children and pregnant women in high malaria transmission areas. The nets are effective for 2-3 years, depending on the model and conditions of use. Between 2010 and 2015, there was an 80% increase in the use of insecticide-treated nets for all populations at risk of malaria in sub-Saharan Africa by 80%.
RTI/B Stewart
Fact 8: Indoor residual spraying is the most effective way to rapidly reduce malaria transmission
The full potential of indoor residual spraying is obtained when at least 80% of houses in targeted areas are sprayed. Indoor spraying with insecticides kills the mosquito vector and is effective for 3–6 months, depending on the insecticide used and the type of surface on which it is sprayed. Longer-lasting forms of insecticides are under development.
WHO/C Black
Fact 9: Pregnant women are particularly at risk of malaria
Pregnant women are at high risk of dying from the complications of severe malaria. Malaria is also a cause of spontaneous abortion, premature delivery, stillbirth and severe maternal anaemia, and is responsible for about one third of preventable low-birth-weight babies. For pregnant women living in moderate-to-high transmission areas, WHO recommends intermittent preventive treatment at each scheduled antenatal visit after the first trimester.
WHO/Payden