From the paper Epidemiology and transmission dynamics of COVID-19 in two Indian states [1]: > Although they are not the wealthiest states in India, Andhra Prad

From the paper Epidemiology and transmission dynamics of COVID-19 in two Indian states [1]: > Although they are not the wealthiest states in India, Andhra Pradesh and Tamil Nadu are among the states with the largest healthcare workforces and public health expenditures per capita, and are known for their effective primary healthcare delivery models. Both states initiated rigorous disease surveillance and contact tracing early in response to the pandemic. Procedures include syndromic surveillance and SARS-CoV-2 testing for all individuals seeking care for severe acute respiratory illness or influenza-like illness at healthcare facilities; delineation of 5km “containment zones” surrounding cases for daily house-to-house surveillance to identify individuals with symptoms; and daily follow-up of all contacts of laboratory-confirmed or suspect COVID-19 cases, with the aim of testing these individuals 5-14 days after their contact with a primary case, irrespective of symptoms, to identify onward transmission. A low/medium income region with good healthcare infrastructure is a rarity and may potentially provide unique insights. We have seen very different transmission patterns in high latitude versus subtropical regions. I wonder if a third pattern will emerge in tropical regions. [1] https://science.sciencemag.org/content/early/2020/09/29/science.abd7672 https://science.sciencemag.org/content/early/2020/09/29/scie...