Tirupati: As many as 743 staff of the Tirumala Tirupati Devasthanams (TTD) including including some priests of the Lord Venkateswara shrine at Tirumala have tested positive for COVID-19 and three have succumbed to the virus since June 11, a top TTD official said on Sunday.Of the 743 infected, three employees succumbed to the dreaded contagion and about 402 personnel have recovered so far from infection while 338 people were undergoing treatment at different COVID care facilities here, TTD Executive Officer Anil Kumar Singhal told reporters here.The famous Lord Venkateswara temple in nearby Tirumala governed by the TTD had re-opened on June 11 for public after being close for two and a half months owing to the coronavirus-induced lockdown,.