1. Centers for disease control and prevention: Swine Influenza A (H1N1) infection in two children-Southern California, march-april 2009;MMWR Morb Mortal Wkly Rep,2009
2. Toddler latest Swine flu case in Egypt http://www.google.com/hostednews/afp/article/ALeqM5iP1qStvCULJ_rKgmloiXfwbJcKGA
3. World Health Organization Global alert and response, pandemic (H1N1) 2009, frequently asked questions: what is phase 6? http://www.who.int/csr/disease/swineflu/frequently_asked_questions/levels_pandemic_alert/en/index.html
4. Novel Swine-Origin Influenza A (H1N1) Virus Investigation Team. Emergence of a Novel Swine-origin Influenza A (H1N1) virus in humans;Dawood;N Engl J Med,2009
5. Hospitalized patients with novel influenza A (H1N1) virus infection-California, april-may, 2009;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2009