The CDC recommends cleaning and disinfecting “high-touch” surfaces including phones, tables, doorknobs, light switches, tablets, and more.
Italy, Spain, South Korea and India are an example for countries where the outbreak of the virus was intense, yet they still managed to contain it.
A total of nine US states - Alaska, Georgia, Idaho, Iowa, Louisiana, Montana, Ohio, Utah and Wisconsin - also reached records for single-day infections.
"WHO's slow motion on this issue is unfortunately slowing the control of the pandemic."
The WHO acknowledged that some outbreak reports related to indoor crowded spaces have suggested the possibility of aerosol transmission
"The possibility of airborne transmission in public settings - especially in very specific conditions, crowded, closed, poorly ventilated settings that have been described, cannot be ruled out."
WHO said the decision to halt the trials does not affect other studies where the drugs are used for non-hospitalized patients or as a prophylaxis.