(Reuters) – Scientists on Friday called on British Prime Minister Boris Johnson to support the waiver of intellectual property rights for COVID-19 vaccines, tests and treatments in the wake of the rapid spread of the Omicron coronavirus variant. In a letter, also addressed to the British health, trade, business and foreign ministers, the scientists asked Johnson to support the World Trade Organization’s (WTO) Trade-Related Aspects of Intellectual Property Rights (TRIPS) agreement. British officials have been sceptical about the usefulness of the waivers, but said they were open to talks with t…