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The excitement of two COVID-19 vaccines with more than 90 percent efficacy is undeniable.In November, both Pfizer and Moderna announced its scientists had developed vaccines with efficacy at or near 95 percent, but scientists are warning these vaccines are not the "silver bullet" to ending the pandemic.“We don’t want to give the public the impression that there’s an emergency use authorization and these vaccines become available in a small amount in December and we can go back to our pre-pandemic behavior,” said William Moss, executive director of the International Vaccine Access Center at Johns Hopkins.In June, the FDA released its vaccine guidelines, saying it would consider emergency use authorization for any vaccine testing with at least 50 percent effectiveness, so there is a reason for celebration, according to Moss, but only after certain questions about the vaccine are answered.Dr. Anthony Fauci has said the initial vaccines will prevent symptoms in those who become infected, rather than kill the virus itself. Moss says that means immunized people might be able to spread COVID-19 to others.He also wonders how long immunization will last. One year? Three years? Will booster doses be needed? They're all careful considerations that will only emerge once one is put into play, according to Moss.“It’s obviously tragic that the [COVID] cases are occurring that quickly, but it does help a vaccine trial because otherwise you just have to wait that much longer for samples to come in,” said Moss.The vaccine process has innovated how scientists and researchers approach these types of situations, however, according to Moss.In traditional vaccines, a small dose of the virus is injected into the body so the immune system can create antibodies. In the COVID-19 vaccine, though, both Moderna and Pfizer have used what is called messenger RNA (mRNA) where the virus’ genetic code is injected into the body so it can instruct cells on what antibodies to produce. Scientists say this way is faster, safer, and can create a stronger immune response as people are not exposed to the virus.“I suspect that if this all goes well and these vaccines are safe and continue to demonstrate 90 to 95 percent efficacy, we’re going to see other vaccines of a similar type,” said Moss. 2298

The coronavirus has had a significant impact on sports, and now football is beginning to see the virus affect the sport.NFL Network reports that the league and players’ union agreed to not hold a preseason this fall, which would have gotten underway next month. Given football’s schedule, the games provide teams with revenue as they’re generally included in season ticket packages. The decision comes with the likelihood of teams playing in front of no or a limited number of fans during the regular season. Several states have said that large gatherings will be limited into the fall.NFL Network added the league will expand training camp rosters, and there will be an opt-out for players at a “high risk” of having coronavirus complications. 752

The election is days away, and ballots across the country are already being cast in person, via mail. Billed as one of the most important elections of our time, ABC 10News D.C. Correspondent Joe St. George joins us to talk about the presidential election, what to watch for in Thursday's dueling town halls, and to explain how Nevada and Arizona could play a major role in deciding our next president.You can join us at 9:30 a.m. for the conversation right here on our ABC 10News Facebook page. 502

The Cruise Lines International Association announced Tuesday that any cruise ship worldwide carrying more than 250 people must test everyone, passengers and crew members, for COVID-19 before embarking.They must also test negative for the virus if they are to board the ship, CLIA said in a press statement posted to their social media account."CLIA ocean-going cruise line members have agreed to conduct 100% testing of passengers and crew before embarkation - a travel industry first," CLIA tweeted. 508

The calendar just turned to November but some companies are already in the Christmas spirit. Starbucks and McDonald's have already released their 2017 holiday cups.Starbucks scrapped its traditional red design for a DIY cup. There's a stack of presents, a Christmas tree, doves, two people holding hands and lots of white space. Customers are encouraged to color the cups themselves.  412