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Epidemiology of pertussis
Tina Tan1, Evelinda Trindade, Danuta Skowronski
1Feinberg School of Medicine, Division of Infectious Disease, Children's Memorial Hospital, 2300 Children's Plaza, Box 20, Chicago, IL 60614-3394, USA.
The Pediatric Infectious Disease Journal
|May 7, 2005
Summary
Pertussis incidence is rising globally, particularly in adolescents and adults, despite vaccination efforts. This shift necessitates updated immunization strategies to protect vulnerable infants from this contagious respiratory disease.
Area of Science:
- Epidemiology
- Public Health
- Immunology
Background:
- The World Health Organization's goal of <1 pertussis case per 100,000 in Europe by 2000 was largely unmet.
- Pertussis (whooping cough) incidence is increasing globally, with a notable rise in adolescents and adults.
Purpose of the Study:
- To analyze global pertussis reporting, incidence trends, and prevention strategies.
- To understand the reasons behind the rising pertussis incidence, especially in older age groups.
- To inform global control strategies, particularly concerning pertussis vaccination schedules.
Main Methods:
- Review of available pertussis incidence data and surveillance systems worldwide.
- Analysis of reporting variations, diagnostic methods, and case definitions across countries.
- Examination of shifts in pertussis age distribution and transmission dynamics.
Main Results:
- Reported pertussis incidence is likely lower than actual due to underreporting and misdiagnosis, particularly in adults.
- Increased pertussis cases observed in infants, adolescents, and adults globally post-vaccination introduction.
- Adolescents and adults are identified as key sources for transmitting pertussis to vulnerable infants.
Conclusions:
- Pertussis remains a global concern despite high infant immunization rates.
- A shift in pertussis epidemiology towards older populations is evident.
- Revised immunization schedules, including adolescent boosters, are crucial for effective pertussis control.