Niriella, M.A.Ediriweera, D.S.de Silva, A.P.Premaratna, B.A.H.R.Jayasinghe, S.de Silva, H.J.2021-05-032021-05-032021Transactions of the Royal Society of Tropical Medicine and Hygiene.2021; 115(9):944-9460035-9203 (Print)1878-3503 (Electronic)0035-9203 (Linking)http://repository.kln.ac.lk/handle/123456789/22179Indexed in MEDLINEABSTRACT: A significant decrease in dengue fever cases and a contrasting increase in leptospirosis cases were reported for the second quarter of 2020 compared with 2019 in Sri Lanka. In the absence of significant environmental and weather-related differences to account for these changes in incidence, we investigated the possibility that the effects of the COVID-19 pandemic on public health, social behaviour and the restrictions imposed during the lockdown influenced the fluctuations in dengue and leptospirosis infections. KEYWORDS: COVID-19; dengue fever; leptospirosis; pandemic; tropical infections.en-USdengueArticle