A Health Affairs study finds that about 70% of the slowdown in health care spending growth between 2009 and 2011 was a result of the recession, while a Brookings Institution working paper finds that the slowdown since 2002 mostly has been caused by the previous two recessions.
Some critics say the pilot projects funded by PCORI over the last two years have not included rigorous enough trials to inform changes to the way care is delivered.
CDC Director Thomas Frieden says the virus "poses little risk" to the general population.
Insurers are concerned that the increasing number of exemptions will weaken the individual mandate and raise premiums by making it easier for young, healthy individuals to avoid buying coverage.
The Department of Justice files a petition with the U.S. Court of Appeals for the D.C. Circuit asking for a full-court review of the case.