Thedi Ziegler

Epidemiology and clinical characteristics of community-acquired pneumonia in hospitalized children.

Kurt Olsen, Jaana Kauppila, M. Leinonen, 2004, Pediatrics.

Minor Changes in the Hemagglutinin of Influenza A(H1N1)2009 Virus Alter Its Antigenic Properties

Ilkka Julkunen, Mari Strengell, I. Julkunen, 2011, PloS one.

Strengthening the influenza vaccine virus selection and development process: Report of the 3rd WHO Informal Consultation for Improving Influenza Vaccine Virus Selection held at WHO headquarters, Geneva, Switzerland, 1-3 April 2014.

Uzma Bashir, Mahmudur Rahman, N. Cox, 2015, Vaccine.

Decline in temperature and humidity increases the occurrence of influenza in cold climate

Olli Vainio, Tiina M. Ikäheimo, Jaana Kauppila, 2014, Environmental Health.