Luxembourg's government has not been disinfecting streets and public spaces. Should it?

It's what has been happening in China or South Korea. Now a number of French communes have followed suit, sanitising streets and public spaces.

But is this really necessary? Should all countries be taking these measures?

Not so, according to virologist Emmanuel André.

He explains that, as it is people who carry and transmit the virus, it's not the cleansing of the streets that will prevent the spread of the disease. The virus can only survive in our external environment temporarily, and any traces would quickly fade in a matter of hours or days of their own accord.

André stressed that to stop the spread of the virus, safety measures should apply first and foremost to humans. Any disinfectant applied to a surface would only work on that surface at that time, and would not stop people from spreading it further.