This week's case was donated by the very astute microbiology laboratory at the MetroHealth System who detected an important - but unexpected - finding. The patient is an elderly man on inhaled bronchodilators and steroids for persistent eosinophilic asthma who presented with fever, dry cough and shortness of breath. Reverse transcription PCR (RT-PCR) for the SARS-coronavirus-2 (cause of COVID-19) was negative, as was RT-PCR for influenza A and B viruses. However, blood cultures grew a number of bacteria including Gram-negative bacilli, and the following was noted in a stool ova and parasite exam. What parasite is present here?
Read Dr. Pritt's blog, Parasite Wonders, and submit your answers, comments, and questions. Also, visit her website ParasiteWonders.com, which hosts an archive of classic images from cases Dr. Pritt posted going back to 2007 (in an easy-to-search "A through Z" format) and also offers a flashcard feature.
An additional finding was seen on the sheep blood agar plate of the sputum culture:
Review of the sputum showed the following: