CDC recommends N100 now.
The N95 recommendation is outdated.
http://www.cdc.gov/vhf/ebola/hcp/infection-prevention-and-control-recommendations.html
This still has N95 for Health Care Personnel (HCP) in aerosol generating procedures around Ebola patients.
Do you have a link for the N100 recommendation? I mention because the CDC often produces dual recommendations for HCP and the public, the latter who are far less likely to have intense exposure in a closed environment.
This matters because N100 are almost twice the cost, and for many the filtration makes inhalation very difficult. This is a longstanding problem with military filtered breathing equipment.