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| Russian | English |
| временно́е окно проведения вакцинации | vaccination window (The rate of decay of maternal antibody prevalence and subsequent age-acquisition of infection are rapid, and the average age at primary infection early. The vaccination window is narrow, and suggests optimal targeting of vaccine to infants 5 months and above to achieve high seroconversion.  nih.gov Pustelga) |
| временное окно | time interval (Kinain) |