Casinos that were closed through May due to the coronavirus pandemic yielded nearly no tax revenue for Nevada. That’s according to a monthly Gaming Control Board report posted Tuesday. Gambling establishments statewide reported a 99.4% decrease in house winnings compared with the same month a year ago. A small amount of revenue came from mobile sports betting and interactive poker. The state collected just $56,000 in taxes based on May revenues, down 99.9% from a year ago. Casinos were allowed to reopen June 4 after being closed in mid-March to prevent people from gathering and spreading the COVID-19 illness.