The GAA has reminded members to adhere strictly to return to play protocols if the remainder of the playing season is to be unaffected.
And, in a letter to clubs and counties, GAA officials warn that any member who breaks travel quarantine rules to participate in a training session or game could be hit with a minimum eight-week suspension.
This update comes amid growing concerns that the season could be impacted, with teams more frequently reporting positive Covid-19 cases and close contacts within their squad.
Last weekend, just hours before their Leinster hurling final with Kilkenny, Dublin lost a number of players due to Covid protocols after communication from the HSE.
Before their Connacht SFC game with Leitrim, Mayo were also hit by a number of cases.
"Given the increased transmissibility of the virus, it is now more important than ever that the return to play guidelines issued previously are strictly followed if the playing season is to pass off successfully," a letter from GAA president Larry McCarthy and DG Tom Ryan read.
The GAA has forbidden indoor activity at club level, whilst players and officials have again been asked to adhere to travel protocols to and from games and training sessions.
Parties are asked to travel separately where possible, ensuring the number of close contacts is kept to a minimum.
Cross-border challenge games between clubs and counties in the North and those in the South are now permitted.
Outdoor gatherings of up to 200 people continue to be permitted.
"Where quarantine after travel abroad is a Government requirement, it is essential that all of our members adhere to the relevant advice – as such if a member participates in a training session or game in contravention of the quarantine rules in the relevant jurisdiction, they may be dealt with under Rule 7.2."
That rule pertains to "misconduct considered to have discredited the association" and carries a minimum eight-week suspension.