To study the glycemic control by estimating HbA1c levels among previously non-diabetic individuals aged above 40 years, who recovered from coronavirus disease 2019 (Covid-19) infection. This is an analytical cross-sectional study of people affected with Covid-19 infection, who were home-isolated, hospitalized, and discharged. The simple random sampling technique was used for the study group. Tirupati City, Andhra Pradesh State, India. We assessed socio-demographic profiles, hba1c levels, RBS, and severity of infection. The obtained laboratory reports were analyzed by using means and proportions after entering data in MS Excel and converted to SPSS software new version. The study participants comprised mostly middle age group males and females (mostly 40-60 years, with 60% of them being females). Most of the study subjects were healthy, and 58% of them have normal hba1c levels. 32% of them are in border line diabetic. The prevalence of diabetes post Covid-19 infection is 10%. The majority of participants have normal random blood sugar levels (around 92%), and very less individuals have abnormal random blood sugar levels (2% of the subjects). There is no significant association between hypertension and raised blood sugar levels post Covid-19 infection. Based on the study, Covid-19 infection has an impact on blood sugar levels and altered glycemic control, switching a few individuals into diabetic and a significant number of individuals into the pre-diabetic state, who are non-diabetic individuals before Covid-19 infection.