Some 70% of Americans have either received, arranged to receive or will make plans to get a Covid-19 vaccine, according to a survey by the Kaiser Family Foundation, bringing into focus a goal President Joe Biden set for the Fourth of July–but efforts could be marred by persistent rates of vaccine hesitancy that have have not shifted for months and threaten the overall inoculation drive. Stay Connected Forbes on Facebook: http://fb.com/forbes Forbes Video on Twitter: http://www.twitter.com/forbes Forbes Video on Instagram: http://instagram.com/forbes More From Forbes: http://forbes.com