have any microbiological testing been done on patient 42473's fluid wound in this month?
select count(*)>0 from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 42473 ) and microbiologyevents.spec_type_desc = 'fluid wound' and datetime(microbiologyevents.charttime,'start of month') = datetime(current_time,'start of month','-0 month')