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APA4ort.xyz Knowledge Graph. (2026). Clustering Cases of <i>Chlamydia psittaci</i> Pneumonia in Coronavirus Disease 2019 Screening Ward Staff. Retrieved May 24, 2026, from https://4ort.xyz/entity/clustering-cases-of-i-chlamydia-psittaci-i-pneumonia-in-coronavirus-disease-2019-screening-ward-staff