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?:abstract
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Objectives: To quantitatively analyze the impact of type of contact and duraton of contact with infectivity of novel Corona virus Material and methods: We analyzed 378 suspects/cases to prove our null hypothesis Relevant information was recorded on a predesigned proforma prepared in accordance with the objective of the study, in SPSS version 25th Results: Out of 378 suspects, 180(47 61%) were advised PCR based on their higher score on the approved scale Of the total tested cases, 41/180(22 77%) were COVID-19 positive History of contact with positive COVID-19 patients was contributing in 35/41(85 36%) confirmed cases We observed that 25/41(60 97%) of the positive cases had a contact history > 5 days The relationship of duration of contact with COVID-19 infection was statistically significant (p=0 001) 22/41(53 65%) of the positive cases had history of hand shake and hugging, followed by 8/41(19 5%) hand shake only and 5/41(12 19%) with history of mass gathering with a significant relation with viral infectivity (p=0 02) A moderate uphill positive correlation of duration of contact was recorded with test positivity (p=0 001, rho=0 33) as compared to type of contact (p=0 14, rho=0 11) We observed that contact with strong suspect/COVID-19 patients irrespective of type or duration of contact, the probability and relative risk of acquiring infection was 6 times (OR=6 1, rr=1 82) more than in case with no history of contact When the type of contact was kept as static variable and measured the probability for an increase in duration of contact, the probability and relative risk of COVID increases by 26 times (OR=26, rr=2 83) as compared to no contact group At static duration of contact variable, the probability and relative risk for type of contact for COVID-19 was (OR=1 4, rr=1 03) as compared to no contact group Conclusion: It is the duration of contact and not the type of contact that has a statistically significant correlation and a higher probability of exposure to COVID-19
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