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Malaria incidence is expressed as the number of new cases of malaria per 100,000 people each year. The number of cases reported is adjusted to take into account incompleteness in reporting systems, patients seeking treatment in the private sector, self-medicating or not seeking treatment at all, and potential over-diagnosis through the lack of laboratory confirmation of cases.
World Development Indicators
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CO2 emissions (metric tons per capita)
| Arab World | 4.5 | |
| Caribbean small states | 9.7 | |
| East Asia & Pacific | 4.6 | |
| Euro area | 7.4 | |
| European Union | 7.2 | |
| Europe & Central Asia | 7.1 | |
| Latin America & Caribbean | 2.7 | |
| Least developed countries: UN classification | 0.3 | |
| Middle East & North Africa | 4.1 | |
| OECD members | 10.0 | |
| Other small states | 1.4 | |
| Pacific island small states | 0.9 | |
| Small states | 3.4 | |
| South Asia | 1.4 | |
| Sub-Saharan Africa | 0.9 | |
| World | 4.7 |
Carbon dioxide emissions are those stemming from the burning of fossil fuels and the manufacture of cement. They include carbon dioxide produced during consumption of solid, liquid, and gas fuels and gas flaring.
World Development Indicators
Improved water source (% of population with access)
| Arab World | 82% | |
| Caribbean small states | 94% | |
| East Asia & Pacific | 90% | |
| Euro area | 100% | |
| European Union | 100% | |
| Europe & Central Asia | 96% | |
| Latin America & Caribbean | 94% | |
| Least developed countries: UN classification | 63% | |
| Middle East & North Africa | 89% | |
| OECD members | 99% | |
| Other small states | 86% | |
| Small states | 89% | |
| South Asia | 90% | |
| Sub-Saharan Africa | 61% | |
| World | 88% |
Access to an improved water source refers to the percentage of the population with reasonable access to an adequate amount of water from an improved source, such as a household connection, public standpipe, borehole, protected well or spring, and rainwater collection. Unimproved sources include vendors, tanker trucks, and unprotected wells and springs. Reasonable access is defined as the availability of at least 20 liters a person a day from a source within one kilometer of the dwelling.
World Development Indicators