Teams will be allowed coronavirus substitutes during Test matches this summer as part of several temporary rule changes announced by the ICC on Tuesday.
Working in similar fashion to concussion subs, teams will be allowed to introduce a like-for-like replacement for any player displaying Covid-19 symptoms during a match, though the rule will not apply in shorter formats of the sport.
Also among the changes is the permitting of non-neutral umpires because of travel restrictions, a move which has also led to teams being granted an additional DRS review per innings because "there may be less experienced umpires on duty at times".
As previously recommended, the use of saliva on balls has been banned, with umpires told to give each team two warnings before each infringement incurs a five-run penalty.
In a further measure which will last 12 months, teams will be allowed to display an extra sponsor’s logo on match shirts, as long as it does not exceed 32 square inches in size, to boost finances in the wake of the pandemic.
The announcements come on the same day as the West Indies arrived in the UK ahead of next month’s behind-closed-doors series against England.
Jason Holder’s team will spend the next three weeks quarantining and training at Old Trafford, one of two bio-secure venues to be used during the three-match series, the other being Hampshire’s Ageas Bowl, where the first Test begins on July 8.
