Via Eurosurveillance: Note from the editors: A busy and eventful year has passed. Excerpt:
In terms of infectious diseases, much international focus in 2013 was on viral diseases. One example is the avian influenza A(H7N9) virus that crossed the species barrier and since its detection in early 2013, had infected a total of 137 patients including 45 fatalities as of October 2013 .
Another example is the MERS-CoV. Cases had already emerged in 2012 but numbers rose considerably in 2013, reaching 176 cases including 74 fatalities as of 31 December 2013 .
While sustained human-to-human transmission has not been documented for these two viruses to date, both have created much interest among experts because of the severity of the disease, high case fatality rates, and the possible pandemic potential of the H7N9 influenza virus . This interest is reflected in several hundreds of peer-reviewed publications indexed in Medline and Scopus already by the end of 2013; however, many questions remain unanswered.
Eurosurveillance has contributed to the wealth of growing evidence about influenza A(H7N9) and MERS-CoV with 13 and eight timely articles, respectively. The first article presenting the genetic analysis of the novel avian A(H7N9) influenza viruses and discussing its pandemic potential  was published on 11 April together with an editorial , shortly after the Chinese authorities had notified the occurrence of the new virus to the World Health Organization [5,6]. Two timely papers on MERS-CoV provided evidence about the infection of camels in the affected region with a MERS-like CoV [7,8] and indications that camels could play a role in the transmission of the disease. Conclusive evidence for this is, however, still missing.