did patient 57023 have any organisms on the first blood culture ( myco/f lytic bottle) microbiology test last month?
select count(*)>0 from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 57023 ) and microbiologyevents.spec_type_desc = 'blood culture ( myco/f lytic bottle)' and microbiologyevents.org_name is not null and datetime(microbiologyevents.charttime,'start of month') = datetime(current_time,'start of month','-1 month') order by microbiologyevents.charttime asc limit 1