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Johnson & Johnson reports that a booster shot of its COVID-19 vaccine is 94% effective against symptomatic cases when administered two months after the initial dose, and 100% effective against severe COVID-19 after 14 days. The booster, given after six months, significantly increases antibody levels. The company has submitted its data to the FDA. The US will ease travel restrictions for fully vaccinated international travelers starting in November, requiring proof of vaccination and a negative COVID-19 test within three days before flying. Unvaccinated Americans must test negative one day before boarding and again upon arrival. These measures aim to protect Americans and ensure safe international travel.

What percentage effectiveness did Johnson & Johnson report for its booster shot against symptomatic COVID-19 cases?

• 70%

• 80%

• 94%

• 100%

How long after the first dose is the Johnson & Johnson booster shot recommended?

• Six months

• Two months

• One month

• Three months

What must fully vaccinated international travelers show before flying to the US starting in November?

• A quarantine plan

• Proof of vaccination and a negative test within three days

• A negative test result within one day

• A letter from their doctor

What is required from unvaccinated Americans before boarding a flight to the US?

• A negative test result within one day

• Proof of vaccination

• A quarantine plan

• A travel insurance policy

What is the main purpose of the new travel rules according to a White House official?

• To promote airline companies

• To protect Americans and ensure safe international travel

• To increase tourism

• To reduce travel costs