id	keyword
american_scientific_journal-7017	fever
american_scientific_journal-7017	burnetii
american_scientific_journal-7017	samples
american_scientific_journal-7017	bulgaria
american_scientific_journal-7017	acute
american_scientific_journal-7017	research
american_scientific_journal-7017	patients
american_scientific_journal-7017	coxiella
american_scientific_journal-7017	pcr
american_scientific_journal-7017	infection