Pertussis - number of reported cases in Sierra Leone
Sierra Leone: Pertussis - number of reported cases was 0 in 2025. ◆ Volatile
Latest (2025)
0
World rank
137th
of 210 countries
All-time high
2,089
in 1981
All-time low
0
in 1997
Years of data
17
1979–2025
Pertussis - number of reported cases in Sierra Leone, 1979–2025
Source: World Health Organization, Global Health Observatory.
Analysis
Sierra Leone recorded 0 for pertussis - number of reported cases in 2025. That is the lowest value across all 17 years on record.
The figure is down 100.0% over ten years.
Over the whole period, pertussis - number of reported cases in Sierra Leone peaked at 2,089 in 1981 and was at its lowest, 0, in 1997.
That places Sierra Leone 137th out of 210 countries with data for 2025, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Pertussis - number of reported cases in Sierra Leone, year by year
| Year | Value | Change |
|---|---|---|
| 1979 | 1,425 | — |
| 1980 | 1,619 | +13.6% |
| 1981 | 2,089 | +29.0% |
| 1982 | 1,425 | -31.8% |
| 1983 | 1,732 | +21.5% |
| 1984 | 1,573 | -9.2% |
| 1985 | 1,637 | +4.1% |
| 1986 | 123 | -92.5% |
| 1987 | 228 | +85.4% |
| 1988 | 10 | -95.6% |
| 1997 | 0 | -100.0% |
| 2000 | 0 | — |
| 2003 | 0 | — |
| 2007 | 0 | — |
| 2011 | 23 | — |
| 2021 | 0 | -100.0% |
| 2025 | 0 | — |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 1,425 | 1,425 | 1,425 | 1 |
| 1980s | 1,160 | 10 | 2,089 | 9 |
| 1990s | 0 | 0 | 0 | 1 |
| 2000s | 0 | 0 | 0 | 3 |
| 2010s | 23 | 23 | 23 | 1 |
| 2020s | 0 | 0 | 0 | 2 |
Countries ranked near Sierra Leone
- 137 Jamaica 0 compare
- 137 Saint Kitts and Nevis 0
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- 137 Niger 0 compare
- 137 Tanzania, United Republic of 0 compare
- 137 Zambia 0 compare
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- 137 Mauritania 0 compare
- 137 British Virgin Islands 0
- 137 Papua New Guinea 0 compare
- 137 Turks and Caicos Islands 0 compare
- 137 Sao Tome and Principe 0 compare
- 137 Senegal 0 compare
- 137 Tokelau 0 compare
- 137 Mauritius 0 compare
- 137 Marshall Islands 0 compare
- 137 San Marino 0 compare
- 137 Central African Republic 0 compare
- 137 Trinidad and Tobago 0 compare
- 137 Rwanda 0 compare
- 137 Dominica 0 compare
- 137 Cape Verde 0 compare
- 137 Togo 0 compare
- 137 Burundi 0 compare
- 137 Somalia 0 compare
- 137 Antigua and Barbuda 0 compare
- 137 Liberia 0 compare
- 137 Tonga 0 compare
- 137 Solomon Islands 0 compare
- 137 Barbados 0 compare
- 137 Cuba 0 compare
- 137 Palau 0
- 137 Grenada 0 compare
- 137 Congo 0 compare
- 137 Mozambique 0 compare
- 137 Benin 0 compare
- 137 Niue 0 compare
- 137 Bangladesh 0 compare
- 137 Djibouti 0 compare
- 137 Bahamas 0 compare
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- 137 Cook Islands 0 compare
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- 137 Montserrat 0
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- 137 Gambia 0 compare
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- 137 Anguilla 0
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- 137 Mongolia 0 compare
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- 137 Turkmenistan 0 compare
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More health data for Sierra Leone
- Un projection of annual infant deaths, annual growth rate -2.34 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.773 % change on previous year (2090)
- Heat deaths vs projected death rates 1,199 (2090)
- Un projection of annual infant deaths 4,209 (2100)
- Population ages 15-64, male, annual growth rate 2.77 % change on previous year (2025)
- Population ages 15-64, male, per unit of GDP 0.0003 units per US$ of GDP (2025)
- Population ages 15-64, male, per capita 0.2946 units per person (2025)
- Population ages 15-64, total, annual growth rate 2.75 % change on previous year (2025)
- Population ages 15-64, total, per unit of GDP 0.0007 units per US$ of GDP (2025)
- Population ages 15-64, total, per capita 0.5907 units per person (2025)
Frequently asked questions
- What is pertussis - number of reported cases in Sierra Leone?
- Pertussis - number of reported cases in Sierra Leone was 0 in 2025, according to World Health Organization, Global Health Observatory.
- What is the highest pertussis - number of reported cases recorded in Sierra Leone?
- The highest recorded value was 2,089 in 1981.
- What is the lowest pertussis - number of reported cases recorded in Sierra Leone?
- The lowest recorded value was 0 in 1997.
- How does Sierra Leone rank for pertussis - number of reported cases?
- Sierra Leone ranks 137th out of 210 countries with data for 2025.
- Is pertussis - number of reported cases rising or falling in Sierra Leone?
- Over the last ten years it is down 100.0%. The long-run trend across the full record is volatile.
- Where does this Sierra Leone data come from?
- The figures come from World Health Organization, Global Health Observatory, published as part of Pertussis - number of reported cases. Statizoid updates them automatically from the source API.
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