A policewoman, wearing a facemask amid fears over the spread of the COVID-19, stands guard during an anti-government rally in Bangkok on Sunday. AFP

A couple wearing masks to prevent contacting the coronavirus rides on an escalator at a subway station in Seoul. Reuters

In Switzerland, as in neighbouring France, it is common for women and people of opposite sexes to greet each other with alternating kisses on both cheeks. The Swiss version generally involves an asymmetrical three in total, in contrast to the two more usual for 'la bise' (the kiss) across the border.

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"We know that keeping one's distance socially is the best way to slow the spread of the virus. That is why renouncing greeting kisses is a measure that should be seriously taken into consideration," Berset told the SonntagsZeitung newspaper, when asked if he was advising against the greeting.

A tourist wearing protective mask surrounded by birds stands in Piazza del Duomo in center Milan. AFP

French Health Minister Olivier Veran advised on Friday against shaking hands because of the coronavirus outbreak, though he stopped short of saying the same of la bise. Switzerland and France border northern Italy, where Europe's worst outbreak has occurred.

Regularly washing or disinfecting your hands is central to the advice issued by the World Health Organisation and other authorities on how to prevent the spread of the disease.

A man and his wife wear protective face mask, following the outbreak of coronavirus, at a supermarket in Baghdad. Reuters

Separately, newspaper NZZ am Sonntag quoted a health official as saying Switzerland would issue new guidelines in the coming days on how to guard against the illness.

"One will be to immediately stop shaking hands," Daniel Koch, head of the communicable diseases unit at the Swiss Federal Department of Health, told the newspaper.

Switzerland has already introduced a ban on events expected to draw 1,000 people or more until March 15 in an effort to combat the coronavirus. It has fewer than 20 confirmed cases, in contrast to the hundreds in Italy, though that number is rising.

Reuters