%0 Comparative Study
%T A comparison of COVID-19 secondary attack rate in household and close contacts compared to current risk stratification guidelines of the Kerala government.
%A Rathish B
%A Wilson A
%A Joy S
%J Trop Doct
%V 51
%N 3
%D Jul 2021
%M 33765905
%F 0.828
%R 10.1177/00494755211002012
%X COVID-19 has been found to be highly infectious with a high secondary attack rate with a R0 of 3.3. However, the secondary attack rate based on risk stratification is sparsely reported, if ever. We studied the contact tracing data for two index cases of COVID-19 with some overlap of contacts. We found that 60% of high-risk contacts and 0% of low-risk contacts of symptomatic COVID-19 patients contracted the infection, in keeping with the Kerala government contact risk stratification guidelines.