One of my jobs since October last year has been to keep up on the literature for Ebola virus and Ebola virus disease. At this stage I have a lot of reading to catch up on.
There were 1,858 publications during the 37 years including 1977 to 2013. In 2014 and 2015 (so far), there have been 1,485 publications.
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According to a basic search of PubMed using the term 'ebola' - there have been over 1,500 publications - and those are the ones captured by PubMed - to be found using that search term.