Cruise ship passengers test positive for COVID-19, despite safety protocols

Dr. Ashish Jha discusses news about positive COVID-19 cases on the Celebrity Millennium, despite a requirement for passengers to show proof of vaccination and test negative prior to boarding.
2:56 | 06/11/21

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Transcript for Cruise ship passengers test positive for COVID-19, despite safety protocols
Joining us is Dr. Ashish jha the Dean of the brown university school of public health. Two people tested positive aboard the millennium despite being vaccinated and having negative tests. How concerned should we be? Good morning, Michael. Thanks for having me back. Break through infections do happen. They're very rare. We didn't see a large outbreak on the ship. This is the benefit of vaccinations. Everybody else got through the cruise without problems. Cruise ships are packed places. People spend a lot of time together. This would have been far worse if you had unvaccinated people on that ship. Thank goodness everybody was vaccinated. Dr. Jha, the CDC is investigating cases of myocarditis in vaccinated young people. The agency hasn't said the vaccine is the cause. What symptoms should parents look out for? Michael, I'm glad they're investigating this. We need to be very careful as we're vaccinating kids. All data says the vaccines are safe. We'll see some side effects. Chest pain is pretty classic in young people. They get an inflammation of their heart and so it can feel like -- sometimes they have problems with breathing. Mostly chest pain is the the we're looking for. What is the treatment? You know, good fuss is these things just resolve on their on almost all the time. Occasionally somebody needs to be hospitalized. Majority of the times they're mild and kids recover pretty quickly on their own without treatment. Doctor, moderna is asking for emergency use authorization in 12 to 17-year-olds. How effective has the vaccine been in those trials? Do the side effects differ from pfizer? The vaccines have been terrific in 12 to 17-year-olds, pretty much 100%. That is also true for pfizer. They both seem to be very effective. We haven't studied it in larger samples. In terms of side effects that kids are seeing -- the sore arm, occasionally significant body symptoms, but all lasting about 24 hour. For parents out there trying to decide what to do with their kids, should they choose one vaccine over another? You know, I've gotten two of my kids vaccinated. At that point only pfizer was available. They're comparable vaccines. I don't think I have any personal preference. I wouldn't advise people pick one over another. They're both very safe. Dr. Jha, thank you for joining us. Thank you.

This transcript has been automatically generated and may not be 100% accurate.

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