Photo: Welsh Health Minister Vaughan Gething
People travelling to Wales from Covid hotspots elsewhere in the UK could face quarantine under measures being considered by the Welsh Government.
Health Minister Vaughan Gething said he was looking at how powers could be used to protect areas with lower cases.
It comes after the prime minister rejected calls from Welsh ministers for a travel ban.
Currently people in lockdown areas in England can go on holiday in parts of Wales not subject to restrictions.
It is illegal for people to leave or enter lockdown counties Wales except for a limited set of reasons, like work or education.
But a similar law does not exist for areas under local restrictions in England.
UK Health Secretary Matt Hancock said the Westminster government felt it was more “appropriate” to put “travel restrictions in guidance rather than in law”.
Mr Gething said if some English areas were countries Wales “would have quarantine regulations for them”.
But he said there was “no good reason” to prevent someone from a low incidence area like Devon from travelling to Pembrokeshire.
“We’re having to consider how we use our powers to protect lower-prevalence areas of Wales but at the same time, we don’t want to take a whole-nation approach,” Mr Gething said.
First Minister Mark Drakeford had written to Prime Minister Boris Johnson last week, asking for travel restrictions to prevent people visiting Wales from areas under lockdown in England.
But Mr Johnson told BBC Wales: “We are all one country, people should exercise their common sense.”
Mr Gething said it was “disappointing” Mr Johnson did not respond to the letter.
He added that if people travelled from an area like Liverpool there was a risk of “spreading events”.
The Conservative health spokesman in the Senedd, Andrew RT Davies, said bringing in quarantine restrictions for people travelling to Wales from Covid hotspots in England was a “dangerous slope” for the Welsh Government to go down.
“If you start introducing such quarantine restrictions in Wales does that mean then there’s a quid pro-quo that England, Scotland and Northern Ireland will start doing the same for Welsh residents?
“There are all sorts of questions to be answered before you even entertain implementing such dramatic action.”
Plaid Cymru leader Adam Price said he had called for measures to limit travel with Mark Drakeford for “two weeks running”.
“At a time when we need to act quicker and smarter to eliminate the virus, it’s regrettable that it took the UK government’s negligent dismissal of travel restrictions to bounce the Welsh Government into action,” he said.