Another Indian shuttler HS Prannoy also contracted the virus. Both tested for the virus and their reports came with positive results in their third test.
Developed by the Royal Thai Airforce, the ZnO-NP-coated socks were trialled in a real-life setting by researchers at the Siriraj Hospital, Mahidol University, in Thailand.
The monarchy has long been considered sacrosanct in Thailand, and is protected by a law that makes defaming senior royals punishable by a prison term of three to 15 years.
The youth-led movement has suffered several blows this week, with scores arrested after demonstrators surrounded a royal motorcade and flashed a pro-democracy salute to Queen Suthida during a Wednesday protest.
