Assessment of Serological Response to COVID-19 Vaccination and its Association with Exposure to BCG Vaccine: A Comparative Study

I0 个研究点目标入组 70 人开始时间: 待定最近更新: 2024年6月24日

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•Children who have received COVID-19 vaccination with 2nd dose between 2 to 3 months from the date of enrolment.
•Group 1: Participants who have received BCG vaccine at birth or infancy.
•Operation definition of BCG vaccinated children in the primary objective: presence of BCG scar over left arm.
•A separate exploratory analysis will also be done which will include children without BCG scar who have a positive history of BCG vaccination taking into consideration the cases of scar negative BCG vaccination
•Group 2: Participants who have not received BCG vaccine at birth or infancy.

•1)Known active case or a history of Mycobacterium tuberculosis infection.
•2)Children with diagnosed or suspected immunodeficiency states-primary or secondary.
•3)Children with suspected or confirmed malignancy.
•4)Children with history of blood transfusion, intravenous immunoglobin, steroids or immunosuppressive drugs in the last three months.
•5)Fever within past 72 hours.

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