Coronavirus Can Survive Up To 28 Days on Surfaces

According to a new study, the previous estimates of coronavirus survival time on various household surfaces are actually longer, especially if these surfaces are not rough such as glass surface of the mobile phones and paper surface of bank notes.

These new findings refute earlier claims of the coronavirus being vulnerable to certain surfaces and higher temperatures as the new research has established this contagion to be more resilient in indoor setting.

Researchers working for Australia’s Commonwealth Scientific and Industrial Research Organization conducted extensively tested materials usually used indoors and established that the coronavirus survival time surpassed that of the flu virus.

This finding puts more emphasis on personal hygiene practices and reiterates the need for frequent handwashing and sanitization of the indoor surfaces and surfaces which are commonly touched such as a mobile phone.

So far the only well known vector for transmission of coronavirus between two individuals is via aerosol droplets. These droplets are usually generated from the respiratory system of a person during speaking, coughing, and sneezing.

Some researchers have also warned that an infected person can increase the chances of spread of infection if he sings or shouts. Other than these established routes, there is a possibility of transmission of disease if a healthy person touches a surface contaminated by the contagion and then touches the facial orifices such as mouth, eyes, and nose.

Although this is not the primary reason of spread of infection, but the researchers believe that the possible spread of coronavirus and its survival on high touch surfaces can be controlled if personal hygiene practices and strict cleaning regimens are followed in the community.

It should be kept in mind that laboratory test conditions are simulated to represent real life conditions but in real life the factors to be accounted for a far greater such as UV light.

Human mucous which is usually present in the aerosol droplets was also absent in this study and researchers believe that if the coronavirus particles are covered by human mucous then there long survival time may be cut short to just hours because the properties of human mucous.

An interesting aspect of this study is that it was carried out entirely in the absence of light. This means that virtually there was an absence of any light including UV light. UV light has been proven to work effectively in eradicating the virus from exposed surfaces. In the absence of UV light, the results of survival of the virus has been astonishing.

Researchers at CISRO have used varying indoor temperatures for this study and usually all of the common surfaces that one can find in a household.

At twenty degree Celsius in dark indoor conditions simulated by researchers in lab the coronavirus survived for 28 days which is more time than normal flu virus could survive.

On average, coronavirus in the absence of UV light can survive for 17 days on commonly used high touch surfaces which are of smooth texture.

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