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"Absolutely go and get that second dose."
• 5 min read
Catch up on the developing stories making headlines.Joseph Prezioso/AFP via Getty Images, FILE
About 5 million Americans missed receiving their second dose of Pfizer or Moderna COVID-19 vaccine, according to Centers for Disease Control and Prevention data released on Sunday.
But with some upcoming activities -- traveling and returning to school among them -- possibly requiring proof of a full vaccination -- two doses of Pfizer or Moderna vaccine or a single dose of Johnson & Johnson -- experts told ABC News it's still not too late for those who still need a second shot.