2009 Dec 24 – NEJM Correspondence: Holiday Spikes in Pneumococcal Disease among Older Adults

NEJM Volume 361:2584-2585 December 24, 2009 Number 26
To the Editor: Rates of invasive pneumococcal disease in the United States increase dramatically, or "spike," during winter holidays.1 We analyzed population-based surveillance data to determine whether spikes may be caused by increased transmission from children to older adults.


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