The Food Technology Institute from Brazil looked into the survival rates of 3 types of coronavirus on surfaces like packages or food.
All existing coronaviruses cause great concerns to the global population:
Virus survival on plastic packaging
Gustavo Moraes, researcher at Food Technology Institute (Ital), confirms that SARS-CoV-1 survived between 4 to 6 days on plastic and MERS-CoV between 1 to 3 days. Now he found that the new coronavirus remains active for periods between 4 to 7 days on packaging surfaces. These tests were performed under temperature conditions ranging from 21°C to 25°C and up to 50% relative humidity (RH) for SARS-CoV-1, from 20°C to 30°C and 30 to 80% RH for MERS -CoV, and 21°C to 27°C and 35 to 65% RH for SARS-CoV-2.
Virus survival on metal
On metal, SARS-CoV-1 remains active between 1 to 5 days, while MERS-CoV remains present for 1 to 3 days and SARS-CoV-2 for 8 hours more than 7 days, under temperature conditions and RH similar to the studies for plastic.
Virus survival on cardboard
In corrugated cardboard, at a temperature of 21°C to 23°C and 40% RH, the persistence on the surface of up to 2 days for SARS-CoV-2 is double the survival rate in that same material for SARS-CoV-1.
Virus survival on glass
The only material on which the new coronavirus had less resistance compared to SARS-CoV-1 was glass, where it lasted up to 4 days and SARS-CoV-1 resisted up to 5 days, considering, respectively, temperature ranging from 21°C at 25°C and 22°C and a relative humidity of up to 65%.
Virus survival on paper
On paper, a study shows persistence of SARS-CoV-1 for up to 1 day at 20°C, while for SARS-CoV-2 its persistence was observed ranging from 3 hours to 5 days under temperatures of 22°C to 27°C and UR from 36 to 65%.
“We see that porous materials tend to allow a lower persistence of SARS-CoV-2 than non-porous materials. This type of observation, however, should be done with caution, given the small number of studies available,” Moraes concludes.