איך נדבקים בשפעת
דיון מתוך פורום מחלות זיהומיות
http://www.dailymail.co.uk/health/article-1352703/Flu-virus-One-sneeze-infect-entire-room-hours.html http://www.dailyhealthreport.org/flu-usually-passed-boy-boy-and-girl-girl-research-shows/1404/
http://www.dailymail.co.uk/health/article-1352703/Flu-virus-One-sneeze-infect-entire-room-hours.html http://www.dailyhealthreport.org/flu-usually-passed-boy-boy-and-girl-girl-research-shows/1404/