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This study has been done upon (296) recovered Covid-19 patients, 189 (63.9%) males and 107 (36.1%) females. The study found that blood group O was the most vulnerable to infection with a percentage (59.8%), followed by group (A) (35.8%), AB (2.4%) and finally group B (2%). The study also showed that (71.6%) of the infected people consume citrus fruits only once a week, (61.1%) do not consume fish, (86.1%) are used to shaking hands and approaching others when meeting others, (95.3%) do not expose their bodies to direct sunlight, and (90.2%) do not wear masks and gloves outside the home.Material and method : questionnaire was used with direct interview ,required data obtained from medical reports then a statistical analysis was performed.Results: Most patients from age groups (25-40) years , blood group B is the least vulnerable to infection , most people are accustomed to rapprochement and closeness . Patients were usually expose their bodies to sun light as a natural source of Vitamin D .Conclusion :main cause of covid -19 spread is closeness , blood group B is the least vulnerable to infection , healthy nutrition and cleanness are very necessary to prevent covid-19 spread.