A common term heart disease is nothing but a cardiovascular disease or a Coronary heart disease which reduces the efficiency and proper functioning of heart by blocking veins, artery or blood vessels around it. Coronary heart disease causes disability such as damage to the brain resulting in death. Based on Statistics [10] it indicates that range of age group from 25 to 69 have 25% risk of having heart diseases. Some vital causes for cardiovascular disease are, physical inactivity, smoking, consuming more junk food and addiction of alcohol which are major causes for stroke, chest pain, and heart attack. However because of the awareness about factors and symptoms that are responsible for heart problem, it is possible to predict any heart problem based on statistical analysis of medical records. However Data mining, a modern technique has provided an automatic way of analyzing data using standard classification methods. Though many classifiers are available in data mining that can be used to predict the heart problems, this paper emphasizes on finding the appropriate classifier that has the potential to give better accuracy by applying data mining techniques viz. Naïve Bayes , Support Vector machine and Logistic Regression.

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Rheumatoid arthritis (RA) is a chronic inflammatory disorder in which the immune system attacks the body's tissues, including joints, whereas Covid19 is an acute respiratory sickness caused by a virus that affects the immune system and can produce a variety of symptoms as well as death in some cases. A higher frequency of autoimmune inflammatory arthritis has been associated with respiratory diseases caused by various viral infections and these infections can cause flare-ups in inflammatory arthritic patients. The study focuses on the link between Covid19 and Rheumatoid arthritis as well as the various drugs used to treat the disease and their effects on the human body. The numerous comorbidities, as well as the impact of drugs and vaccination on individuals, were discussed. People affected with RA are already at risk of infection due to the disease itself or the conditions brought about by the treatment of drugs or due to several clinical opinions and therapies. The data from various research explains the prevalence of COVID19 symptoms in rheumatoid arthritis patients is more than twice that of the effect.