5.5 lakh COVID-19 cases expected by July 31 in Delhi: Manish Sisodia; Delhi CM Arvind Kejriwal tests negative for coronavirus; BMC Deputy Municipal Commissioner dies of coronavirus, over 1,700 workers infected; Jyotiraditya Scindia, mother test COVID-19 positive, admitted to Delhi hospital; Priyanka Gandhi likens UP’s Teachers recruitment scam to Vyapam; and more