%0 Journal Article %K Infectious Diseases %K Public Health, Environmental and Occupational Health %B Tropical Diseases, Travel Medicine and Vaccines %D 2021 %G eng %I Springer Science and Business Media LLC %N 1 %R 10.1186/s40794-021-00152-4 %T Vertical disease programs and their effect on integrated disease surveillance and response: perspectives of epidemiologists and surveillance officers in Nigeria %U https://link.springer.com/content/pdf/10.1186/s40794-021-00152-4.pdf %V 7