1. Vaccinations against respiratory tract infections at Hajj
A.S. Alqahtani, H. Rashid, A.E. Heywood 
Clinical Microbiology and Infection 
Volume 21, Issue 2, Pages (February 2015)
DOI: /j.cmi
Copyright © 2014 European Society of Clinical Microbiology and Infectious Diseases Terms and Conditions

2. FIG. 1
Flow diagram of systematic review searching strategy and included studies.
Clinical Microbiology and Infection  , DOI: ( /j.cmi )
Copyright © 2014 European Society of Clinical Microbiology and Infectious Diseases Terms and Conditions

3. FIG. 2
Forest plot of included studies reporting laboratory-confirmed influenza infection by vaccination status.
Clinical Microbiology and Infection  , DOI: ( /j.cmi )
Copyright © 2014 European Society of Clinical Microbiology and Infectious Diseases Terms and Conditions