Scotland fans have been asked to remain covid-safe as they watch Steve Clarke's side take on the Czech Republic at Hampden today.
With thousands of Tartan Army fans expected to congregate in pubs and living rooms across the country, Jason Leitch urged them to "get the windows open" to help stop the spread of the Delta variant currently driving case numbers.
The national clinical director accepted fans would celebrate if Scotland managed to get a result in their first match at a major finals in 23 years - but warned "the virus is still there".
Much of the central belt - including Glasgow and Edinburgh - remains at Level 2 of lockdown, meaning that up to six people from three households can gather indoors at someone's home.
The same number can book a table in a licensed premises such as a pub or restaurant.
Asked what his advice to supporters was, Leitch said: "The suggestion I would tell Scotland fans not to jump up and down a little if they score feels a little bit tricky.
"I would ask people to do it safely. The pandemic is still there. We have about 10,000 people who are covid positive in the country as of today, and most of them don't know they've got the virus - so they might be in the pub or your house.
"Indoors is worse than outdoors (in terms of virus transmission) so get the windows open, try and stay a little bit distanced if you can.
"Enjoy the game, but at the back of your mind, be a little bit more cautious than maybe you were 23 years ago.
"It's difficult, but the virus is still there."
It comes as Boris Johnson is facing a furious backlash from Tory MPs as he prepares to put the final lifting of coronavirus lockdown restrictions in England on hold.
The Prime Minister is expected to announce the ending of social-distancing rules – which had been slated for June 21 – will be delayed for four weeks to July 19, with the BBC reporting early on Monday the decision had been signed off by senior ministers.
The move follows warnings from scientists that the rapid spread of the Delta variant first identified in India risks a “substantial” third wave if it is allowed to spread unchecked.
Johnson is expected to appeal to the public to show patience, with one last push to ensure that when controls do finally end it is “irreversible”.
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