作者单位:
Ctr Dis Control & Prevent, Meningitis & Vaccine Preventable Dis Branch, Div Bacterial Dis, Natl Ctr
[1]
Vermont Dept Hlth, Burlington, VT 05402 USA
[2]
Ctr Dis Control & Prevent, Career Epidemiol Field Officer Program, Div State & Local Readiness, Off
[3]
Ctr Dis Control & Prevent, Epidem Intelligence Serv, Sci Educ & Profess Dev Program Off, Natl Ctr
[4]
发布时间
2017-04-06