title: Long-lasting immunity by early infection of maternal-antibody-protected infants.
abstract: Newborn higher vertebrates are largely immuno-incompetent and generally survive infections--including poxviruses--by maternal antibody protection. Here, we show that mice survived epidemics as adults only if exposed to lethal orthopoxvirus infections during infancy under the umbrella of maternal protective antibodies. This implies that both the absence of exposure to infection during early infancy or of effective vaccination renders the population highly susceptible to new or old re-emerging pathogens.
authors.affiliation: Institute for Experimental Immunology, University Hospital Zürich, Zürich, Switzerland. alexander.navarini@usz.ch
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Navarini
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Krzyzowska
authors.forename: Karl S
authors.initials: KS
authors.lastname: Lang
authors.forename: Edit
authors.initials: E
authors.lastname: Horvath
authors.forename: Hans
authors.initials: H
authors.lastname: Hengartner
authors.forename: Marek G
authors.initials: MG
authors.lastname: Niemialtowski
authors.forename: Rolf M
authors.initials: RM
authors.lastname: Zinkernagel
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D000914:Antibodies, Viral / Q000276:immunology*; D004482:Ectromelia, Infectious / Q000276:immunology*; D005260:Female; D007112:Immunity, Maternally-Acquired; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D015996:Survival Rate
chemical_list: D000914:Antibodies, Viral