New information keeps appearing; this Diagnosis123 section was last updated 7/4/2023.ย  Recommendations try to be consistent with CDC & WHO. What’s new with Covid? What follows is basic information & background about Covid, from prior posts. Covid-19, or simply “Covid,” stands for Coronavirus Disease 2019.  Itโ€™s caused by the germ โ€œSevere Acute Respiratory Syndrome CoronavirusContinue reading “Covid-19”


Technically, “pneumonia” means “lung infection,” which can be caused by any germ.ย  But in common language, we mean bacteria (see Differences Among Germs).ย  The most common bacteria causing pneumonia is Streptococcus pneumoniae (“pneumococcus”), which we get from germs living harmlessly in our nose & throat.ย  Before antibiotics were invented, over a third of patients diedContinue reading “Pneumonia”

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