MUMBAI: Of the 37 Covid deaths recorded by the Centre Tuesday, Maharashtra has the maximum, followed by Kerala (9), Delhi (4), Karnataka (4), Tamil Nadu (3) and Uttar Pradesh (2). The union health ministry said Gujarat, MP, Punjab, Rajasthan and West Bengal had reported a death each.In the state, one of the deaths had Parkinson’s disease and hypertension, while one had diabetes, hypertension, and chronic renal failure.The fourth patient was immunocompromised and suffered from ischemic heart disease (IHD) and tuberculosis. Mumbai’s total number of Covid-19 cases since May now stands at 509. There had also been three deaths in the city, all involving patients with severe co-morbidities.Doctors told TOI that most patients, even those with co-morbidities, are recovering. The state health department on Monday asked civic bodies to conduct mock drills of all the pressure swing absorption oxygen plants. Dr Daksha Shah, BMC’s executive officer, health, said, “This will also be done in the city. State department will decide the dates.”Patients with Covid and co-morbidities at civic hospitals are being referred to Seven Hills Hospitals for further treatment and isolation.Continuous screening for influenza-like illness (ILI) has helped the Vasai-Virar City Municipal Corporation (VVCMC) identify 225 suspected patients out of 6,973 screened as of Monday. These individuals underwent Covid-19 testing, and six were found to be positive. One patient was admitted to a hospital in Vasai and later discharged, while the remaining five are in home isolation with very mild symptoms. Doctors at VVCMC said the hospitalised patient had multiple co-morbidities. The screening is a measure mandated by state guidelines, which direct civic bodies to maintain surveillance for ILI and Severe Acute Respiratory Infection.