While this time of year is great for gift giving, the one gift you never want to receive is someone's cold or flu. When you strengthen your immune system, you're less likely to get sick when you ...

aLaboratory of Emerging Viruses, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil bDepartment of Microbiology, Immunology, ...