The NBC News medical unit partnered with Stanford University to analyze data from all 50 states to track childhood vaccination rates in counties across the country. The results show a steep decline in vaccination rates among children in much of the U.S. NBC News’ Stephanie Gosk reports. The NBC News medical unit partnered with Stanford University to analyze data from all 50 states to track childhood vaccination rates in counties across the country. The results show a steep decline in vaccination rates among children in much of the U.S. NBC News’ Stephanie Gosk reports.
