One paragraph summery and one paragraph about your reaction for given articles:

1. State of the art science addressing injecting drug use, HIV and harm reduction

2. Middle East Respiratory Syndrome Corona virus, MERS-CoV. Conclusions from the 2nd Scientific Advisory Board Meeting ofthe WHO Collaborating Center for Mass Gathering Medicine, Riyadh

3. Molecular epidemiology and genetic diversity of Listeria monocytogenes isolates from a wide variety of ready-to-eat foods and their relationship to clinical strains from listeriosis outbreaks in Chile

4. Excess mortality impact of two epidemics of pandemic influenza A(H1N1pdm09) virus in Hong Kong.