The UK government will have to “think carefully” about whether to introduce CCP virus vaccine certificates for domestic use, British Prime Minister Boris Johnson said on Thursday. “We’re looking at the issues that are raised by vaccination certification” but “no decisions have been taken at all,” Johnson said during a visit to a nursery in west London. “Lots of countries are thinking about using some sort of vaccine passport” for international travel, he said. “You can see the arguments.” But asked if such vaccine passports could be used domestically to enter pubs or restaurants, Johnson said, “I think we need to think carefully about the issues.” “As I said before, there are lots of difficult issues because there are some people who for medical reasons can’t get a vaccination, pregnant women can’t get a vaccination at the moment.” “You might only be able to implement a thoroughgoing vaccination passport scheme, …