Which has higher reported clinical malaria cases, Nigeria or Sierra Leone?

Sierra Leone, at 638,859 total against 551,187 total in Nigeria as of 2011.

What is the difference in reported clinical malaria cases between Nigeria and Sierra Leone?

87,672 total, with Sierra Leone ahead.

How many years of comparable data are there for Nigeria and Sierra Leone?

21 years are reported by both, from 1990 to 2010.

Where does this data come from?

World Health Organization Global Malaria Programme (http://www.who.int/malaria/world_malaria_report_2009/all_mal2009_annexes.pdf), published as Reported clinical malaria cases (total). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Nigeria vs Sierra Leone: Reported clinical malaria cases

Nigeria

551,187 total

in 2010

Sierra Leone

638,859 total

in 2011

Nigeria rank

13th

Sierra Leone rank

12th

Reported clinical malaria cases over time

Nigeria
Sierra Leone

How they compare

Sierra Leone currently reports 638,859 total against 551,187 total in Nigeria, a difference of 87,672 total.

That makes Sierra Leone's figure about 1.2 times Nigeria's.

The two have swapped places 1 time across 21 shared years of data; in 1990 it was Nigeria ahead.

Nigeria ranks 13th and Sierra Leone ranks 12th of 48 countries.

Across the 3 decades both report, Nigeria averaged higher in 2 and Sierra Leone in 1.

Head to head by decade

Decade	Nigeria	Sierra Leone	Difference	Ahead
1990s	1.29 million total	87,592 total	1.20 million total	Nigeria
2000s	2.44 million total	396,042 total	2.04 million total	Nigeria
2010s	551,187 total	934,028 total	382,841 total	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher reported clinical malaria cases, Nigeria or Sierra Leone?: Sierra Leone, at 638,859 total against 551,187 total in Nigeria as of 2011.
What is the difference in reported clinical malaria cases between Nigeria and Sierra Leone?: 87,672 total, with Sierra Leone ahead.
How many years of comparable data are there for Nigeria and Sierra Leone?: 21 years are reported by both, from 1990 to 2010.
How do Nigeria and Sierra Leone rank globally for reported clinical malaria cases?: Nigeria ranks 13th and Sierra Leone ranks 12th of 48 countries.
Where does this data come from?: World Health Organization Global Malaria Programme (http://www.who.int/malaria/world_malaria_report_2009/all_mal2009_annexes.pdf), published as Reported clinical malaria cases (total). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Nigeria vs Sierra Leone: Reported clinical malaria cases. Statizoid, drawing on World Health Organization Global Malaria Programme (http://www.who.int/malaria/world_malaria_report_2009/all_mal2009_annexes.pdf). Retrieved 27 August 2026, from https://health.statizoid.com/compare/reported-clinical-malaria-cases-total/nigeria/sierra-leone/

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<a href="https://health.statizoid.com/compare/reported-clinical-malaria-cases-total/nigeria/sierra-leone/">Nigeria vs Sierra Leone: Reported clinical malaria cases</a> — Statizoid

About this data

Indicator: Reported clinical malaria cases (total)
Unit: total
Source: World Health Organization Global Malaria Programme (http://www.who.int/malaria/world_malaria_report_2009/all_mal2009_annexes.pdf)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 54 places, 1,168 data points, 1990–2011
Last refreshed: 21 August 2026

Number of clinical malaria cases reported are the sum of cases confirmed by slide examination or RDT and probable and unconfirmed cases (cases that were not tested but treated as malaria). NMCPs often collect data on the number of suspected cases, those t