Tuberculosis Infection by Quantiferon and Related Factors in Contact Investigations - Space of Contact and Duration of Contact

Kenji Matsumoto^*

Osaka City Public Health Office, Japan

^*Corresponding Author: Kenji Matsumoto, Osaka City Public Health Office, 1-2-7-1000, Asahimachi, Abeno-ku, Osakashi, Osaka 545-0051, Japan Email:

Keywords: Contact investigation; Infection risk; QuantiFERON; Index case; Contact status; Environmental factors; Duration of contact; Space of contact

Introduction