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Iliya J, Shatima DR, Tagbo BN, Ayede AI, Fagbohun AO, Rasaq A, Nalban S, Elon IW, Mohammed-Nafiu R, Ahmed P, Oyewole OB, Bakare AA, Yusuf BO, Akinrinoye OO, Ogala WN, Falade AG. Pneumonia hospitalizations and mortality in children 3 - 24-month-old in Nigeria from 2013 to 2020: Impact of pneumococcal conjugate vaccine ten valent (PHiD-CV-10). Hum Vaccin Immunother 2023; 19:2162289. [PMID: 36597576 PMCID: PMC9980440 DOI: 10.1080/21645515.2022.2162289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Pneumococcal conjugate vaccine ten valent (PCV 10) was introduced into Nigeria in three phases. Phase 3 introduction started in August 2016. However, its impact on pneumonia admissions and mortality among vaccinated Nigerian children has not been determined. Data in the period before PCV-10 introduction (3 August 2013-2 August 2016), and after (3 August 2017-2 August 2020) were retrospectively extracted from the medical charts of eligible patients aged 3-24 months with hospitalized radiological pneumonia at the University College Hospital (UCH), Ibadan; National Hospital (NH), Abuja; and Federal Teaching Hospital (FTH), Gombe, allowing for an intervening period of 1 year. Proportions of the patients with hospitalized pneumonia and case fatality rates were determined during both periods. The results were compared using z-test, multiple logistic regression analysis and p < .05 was considered significant. Adjusted pneumonia hospitalization rates between the two periods increased at the NH Abuja (10.7% vs 14.6%); decreased at the UCH, Ibadan (8.7% vs 6.9%); and decreased at the FTH, Gombe (28.5% vs 18.9%). Case fatality rates decreased across all the sites during the post-PCV introduction period: NH Abuja, from 6.6% to 4.4% (p = .106); FTH, Gombe, 11.7% to 7.7% (p = .477); and UCH, Ibadan, 2.0% to 0% (p = .045); but only significant at Ibadan. Overall, proportion of hospitalized pneumonia cases decreased after 3 years of PCV 10 introduction into the National Immunization Programme in Nigeria. The case fatality rate during post-PCV 10 introduction decreased at all the three sites, but this difference was significant at the UCH, Ibadan.
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Affiliation(s)
- Jalo Iliya
- Department of Pediatrics, Gombe State University, Gombe, Nigeria
| | - Denis R. Shatima
- Department of Pediatrics, National Hospital Abuja, Abuja, Nigeria
| | - Beckie N. Tagbo
- Department of Pediatrics, University of Nigeria Teaching Hospital, Enugu, Nigeria
| | - Adejumoke I. Ayede
- Department of Pediatrics, University College Hospital, Ibadan, Nigeria,Department of Pediatrics, University of Ibadan, Ibadan, Nigeria
| | | | - Aliu Rasaq
- Department of Pediatrics, Gombe State University, Gombe, Nigeria
| | - Sarah Nalban
- Department of Pediatrics, Gombe State University, Gombe, Nigeria
| | - Isaac W. Elon
- Department of Pediatrics, Gombe State University, Gombe, Nigeria
| | | | - Patience Ahmed
- Department of Pediatrics, National Hospital Abuja, Abuja, Nigeria
| | | | - Ayobami A. Bakare
- Department of Pediatrics, University College Hospital, Ibadan, Nigeria
| | - Bidemi O. Yusuf
- Department of Epidemiology, Medical Statistics and Environmental Health, University of Ibadan, Ibadan, Nigeria
| | | | - William N. Ogala
- Department of Pediatrics, Ahmadu Bello University, Zaria, Nigeria
| | - Adegoke G. Falade
- Department of Pediatrics, University College Hospital, Ibadan, Nigeria,Department of Pediatrics, University of Ibadan, Ibadan, Nigeria,CONTACT Adegoke G. Falade Department of Paediatrics, University College Hospital, Queen Elizabeth II Road, Orita-Mefa, Ibadan, Oyo2410000, Nigeria
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