This study found that aerosolized SV40 virus was stable at every relative humidity tested at 21 C. - GreenMedInfo Summary
Airborne stability of simian virus 40.
Appl Microbiol. 1973 Aug ;26(2):146-8. PMID: 4355259
T G Akers
The influence of relative humidity on the airborne survival of simian virus 40 (SV40) was studied by allowing virus aerosols to age in rotating drums at 21 or 32 C and at a relative humidity (RH) value ranging from 22 to 88%. Airborne SV40 virus was stable at every RH tested at 21 C, but aerosols maintained at 32 C were inactivated within 60 min at mid-range RH values. The unusual stability at 21 C over a broad RH range indicates that potentially biohazardous situations may occur under laboratory conditions if this virus becomes accidentally airborne.