COVID Pneumonia - What's Your First Approach?

The patient's a 38-year-old female, currently intubated, sedated on paralytics for ARDS, secondary to COVID pneumonia. The sensitivity and specificity of an elevated WBC is not anywhere close to 100%, right? It's probably more like 60 or 70% when we're thinking about infection. Are there any abnormal cells present? Look at the differential. Is there a preponderance of one type of cell line or another, such as lymphocytes, right? Which might signal a viral process or eosinophils, which might signal an allergy or some other type of process? Could this be a left shift? And this might help point you in the