Your browser doesn't support javascript.
Dengue Incidence and Aedes Vector Collections in Relation to COVID-19 Population Mobility Restrictions.
Surendran, Sinnathamby Noble; Nagulan, Ratnarajah; Tharsan, Annathurai; Sivabalakrishnan, Kokila; Ramasamy, Ranjan.
  • Surendran SN; Department of Zoology, University of Jaffna, Jaffna 40000, Sri Lanka.
  • Nagulan R; Faculty of Applied Science, University of Vavuniya, Vavuniya 43000, Sri Lanka.
  • Tharsan A; Department of Zoology, University of Jaffna, Jaffna 40000, Sri Lanka.
  • Sivabalakrishnan K; Department of Zoology, University of Jaffna, Jaffna 40000, Sri Lanka.
  • Ramasamy R; Department of Zoology, University of Jaffna, Jaffna 40000, Sri Lanka.
Trop Med Infect Dis ; 7(10)2022 Oct 07.
Article in English | MEDLINE | ID: covidwho-2066499
ABSTRACT
Contrary to expectation, dengue incidence decreased in many countries during the period when stringent population movement restrictions were imposed to combat COVID-19. Using a seasonal autoregressive integrated moving average model, we previously reported a 74% reduction in the predicted number of dengue cases from March 2020 to April 2021 in the whole of Sri Lanka, with reductions occurring in all 25 districts in the country. The reduction in dengue incidence was accompanied by an 87% reduction in larval collections of Aedes vectors in the northern city of Jaffna. It was proposed that movement restrictions led to reduced human contact and blood feeding by Aedes vectors, accompanied by decreased oviposition and vector densities, which were responsible for diminished dengue transmission. These findings are extended in the present study by investigating the relationship between dengue incidence, population movement restrictions, and vector larval collections between May 2021 and July 2022, when movement restrictions began to be lifted, with their complete removal in November 2021. The new findings further support our previous proposal that population movement restrictions imposed during the COVID-19 pandemic reduced dengue transmission primarily by influencing human-Aedes vector interaction dynamics.
Keywords

Full text: Available Collection: International databases Database: MEDLINE Type of study: Observational study / Prognostic study Language: English Year: 2022 Document Type: Article Affiliation country: Tropicalmed7100287

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Collection: International databases Database: MEDLINE Type of study: Observational study / Prognostic study Language: English Year: 2022 Document Type: Article Affiliation country: Tropicalmed7100287