coimbatore the health department has been betting big on contact tracing to curb the spread of covid19 in the district and as on july 29 it had collected throat and nasal swabs from 38271 people through the same it accounts for 3144 of total number of samples that were collected in the districtaccording to the data available with toi the health department has collected samples from about 121 lakh people in the district since march at least 67051 people were screened in july alone which is nearly four times the number of people who were screened in april and may togetheraround 52 2008 of people who were identified through contact tracing was tested positive for the virus to say 43 of the total positive cases in the district as on july 29 4647 was identified through contact tracingaccording to a city corporation source they had deployed domestic breeding checkers for doortodoor survey in all the areas and they had traced more than 10 contacts per a positive patient tnn