> While queries of the respiratory symptom “cough” show seasonal fluctuations coinciding with yearly influenza seasons, “diarrhea” is a more COVID-19 specific s

> While queries of the respiratory symptom “cough” show seasonal fluctuations coinciding with yearly influenza seasons, “diarrhea” is a more COVID-19 specific symptom and only shows an association with the current epidemic. Since when is diarrhea a COVID-19 specific symptom? Using Baye's the probability of Covid-19 given diarrhea is: prevalence of covid in general pop (medium low) * probability of diarrhea given Covid-19 (very low, given we only recently found out this was a symptom at all) / prevalence of diarrhea in general pop (the prevalence of diarrhea in general is definitely higher than Covid-19). Which lends to a very small probability. Pre-print publications like this based off of shaky data should be taken with a large handful of salt.