when did patient 17462 get the microbiology test, for the first time since 12/2102?
select microbiologyevents.charttime from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 17462 ) and strftime('%y-%m',microbiologyevents.charttime) >= '2102-12' order by microbiologyevents.charttime asc limit 1