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What We're Watching: WHO vaccine passports, Australia vs Big Tech, Nigeria's military shake-up

Pros and cons of vaccine passports: As a growing number of countries roll out COVID vaccines, the World Health Organization has started working on a global "vaccine passport" certification that it hopes will be recognized across the globe. In theory, such a document would exempt global travelers from having to provide negative tests and undergo quarantines upon arrival. But here is where it gets tricky: While countries whose economies are heavily reliant on tourism like Greece are lobbying in favor of the effort so they can get tourists back in their hotels and restaurants, it's still unclear whether vaccinated people, who are protected from getting sick themselves, can transmit the virus to others. If some countries or regions jump the gun and lift restrictions for those with proof of vaccination, it could lead to a potential deluge of infections which would in turn result in fresh lockdowns and more economic turmoil. On the other hand, if vaccines do provide to be a safeguard against disease transmission, a global standard to verify who's gotten the jab could avoid the chaos associated with different nations' medical standards. The WHO has done it before with its famous "yellow card" that documents vaccinations against a range of diseases like rubella and cholera. Will it be able to come up with a paperless version that will be broadly accepted?

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