as nick watt reports, new number shows americans are being pretty compliant when forced to get the shot. >> reporter: after more than 18 months, the land borders with mexico and canada will reopen for nonessential travel early november. but just for the fully vaccinated. >> it's important news for our country, for our economy. we're talking about land ports of entry with two of our key trading partners. >> reporter: here in the u.s., five states have now fully vaccinated more than two-thirds. of their populations. the thing is, they're all in new england. these 15 states are yet to even reach the halfway mark. in september alone, apparently about 49,000 deaths could have been prevented if more people had gotten vaccinated says one new study. >> we have a very good, highly effective and safe vaccine. >> reporter: yet more than 66 million eligible americans still haven't had a shot.