LUCKNOW ( UTTAP PRADESH ): 20 more persons have tested positive for COVID-19 in Uttar Pradesh "20 out of 725 samples have tested positive for coronavirus . 4 are from Lucknow, 9 are from Agra and 7 are from Firozabad," King George 's Medical University (KGMU), Lucknow said in a release on Tuesday.400 persons have been cured of the disease in the state while 31 have succumbed to it.