Lucia Inchauste1, Maritza Patzi2, Kjetil Halvorsen1, Susana Solano2, Raul Montesano3, Volga Iñiguez4. 1. Instituto de Biología Molecular y Biotecnología, Carrera de Biología, Facultad de Ciencias Puras y Naturales, Universidad Mayor de San Andrés, Campus Universitario de Cota Cota, Calle 27, La Paz, Bolivia. 2. Programa Ampliado de Inmunización, Ministerio de Salud, Avenida Capitán Ravelo No. 2199, La Paz, Bolivia. 3. Organización Panamericana de Salud, Calacoto, Calle 18, La Paz, Bolivia. 4. Instituto de Biología Molecular y Biotecnología, Carrera de Biología, Facultad de Ciencias Puras y Naturales, Universidad Mayor de San Andrés, Campus Universitario de Cota Cota, Calle 27, La Paz, Bolivia. Electronic address: volgavir@yahoo.com.
Abstract
BACKGROUND: The public health impact of rotavirus vaccination in countries with high child mortality rates remains to be established. The RV1 rotavirus vaccine was introduced in Bolivia in August 2008. This study describes the trends in deaths, hospitalizations, and healthcare visits due to acute gastroenteritis (AGE) and in rotavirus-related hospitalizations, among children <5 years of age, during the pre- and post-vaccination periods. METHODS: Data were obtained from the National Health Information System to calculate vaccine coverage and AGE-related health indicators. Trend reductions in the main health indicators were examined using the pre-vaccine period as baseline. The effect of vaccination on the epidemiology of rotavirus-related AGE was assessed using data from the active surveillance hospitals. RESULTS: Compared with the 2001-2008 pre-vaccine baseline, the mean number of rotavirus-related hospitalizations was reduced by 40.8% (95% confidence interval (CI) 21.7-66.4%) among children <5years of age in the post-vaccine period (2009-2013). Reductions were most pronounced in children <1year of age, eligible for vaccination. The mean proportions of AGE-related deaths, AGE-related hospitalizations, and AGE-related healthcare visits during 2009-2014 were reduced by 52.5% (95% CI 47.4-56.3), 30.2% (95% CI 23.5-36.1), and 12.9% (95% CI 12.0-13.2), respectively. The greatest effect in reduction of AGE-related deaths was found during the months with seasonal peaks of rotavirus disease. Over the post-vaccine period, changes in rotavirus epidemiology were observed, manifested by variations in seasonality and by a shift in the mean age of those with rotavirus infection. CONCLUSIONS: The significant decrease in main AGE-related health indicators in children <5years of age after the introduction of rotavirus vaccine provides evidence of a substantial public health impact of rotavirus vaccination in Bolivia, as a measure for protecting children against AGE.
BACKGROUND: The public health impact of rotavirus vaccination in countries with high child mortality rates remains to be established. The RV1 rotavirus vaccine was introduced in Bolivia in August 2008. This study describes the trends in deaths, hospitalizations, and healthcare visits due to acute gastroenteritis (AGE) and in rotavirus-related hospitalizations, among children <5 years of age, during the pre- and post-vaccination periods. METHODS: Data were obtained from the National Health Information System to calculate vaccine coverage and AGE-related health indicators. Trend reductions in the main health indicators were examined using the pre-vaccine period as baseline. The effect of vaccination on the epidemiology of rotavirus-related AGE was assessed using data from the active surveillance hospitals. RESULTS: Compared with the 2001-2008 pre-vaccine baseline, the mean number of rotavirus-related hospitalizations was reduced by 40.8% (95% confidence interval (CI) 21.7-66.4%) among children <5years of age in the post-vaccine period (2009-2013). Reductions were most pronounced in children <1year of age, eligible for vaccination. The mean proportions of AGE-related deaths, AGE-related hospitalizations, and AGE-related healthcare visits during 2009-2014 were reduced by 52.5% (95% CI 47.4-56.3), 30.2% (95% CI 23.5-36.1), and 12.9% (95% CI 12.0-13.2), respectively. The greatest effect in reduction of AGE-related deaths was found during the months with seasonal peaks of rotavirus disease. Over the post-vaccine period, changes in rotavirus epidemiology were observed, manifested by variations in seasonality and by a shift in the mean age of those with rotavirus infection. CONCLUSIONS: The significant decrease in main AGE-related health indicators in children <5years of age after the introduction of rotavirus vaccine provides evidence of a substantial public health impact of rotavirus vaccination in Bolivia, as a measure for protecting children against AGE.
Authors: Syed M Satter; Negar Aliabadi; Paul A Gastañaduy; Warda Haque; Abdullah Mamun; Meerjady S Flora; K Zaman; Mustafizur Rahman; James D Heffelfinger; Stephen P Luby; Emily S Gurley; Umesh D Parashar Journal: Vaccine Date: 2018-05-21 Impact factor: 4.169
Authors: Negar Aliabadi; Sébastien Antoni; Jason M Mwenda; Goitom Weldegebriel; Joseph N M Biey; Dah Cheikh; Kamal Fahmy; Nadia Teleb; Hossam Abdelrahman Ashmony; Hinda Ahmed; Danni S Daniels; Dovile Videbaek; Annemarie Wasley; Simarjit Singh; Lucia Helena de Oliveira; Gloria Rey-Benito; N Jennifer Sanwogou; Pushpa Ranjan Wijesinghe; Jayantha B L Liyanage; Batmunkh Nyambat; Varja Grabovac; James D Heffelfinger; Kimberley Fox; Fem Julia Paladin; Tomoka Nakamura; Mary Agócs; Jillian Murray; Thomas Cherian; Catherine Yen; Umesh D Parashar; Fatima Serhan; Jacqueline E Tate; Adam L Cohen Journal: Lancet Glob Health Date: 2019-07 Impact factor: 26.763