Neptune .... we can't read too much into a 1 in 37 million happening (if indeed it is a happening and not an unfortunate sequence of false readings ) .... nature is messy and loves rare and random exceptions .... like rare allergies and conjoined twins .... until it is proven that a statistically significant number of the population get quickly reinfected it's an outlier ..... this virus is under a microscope globally (both literally and metaphorically) so anomalies are more likely to be spotted than in other outbreaks .... doesn't mean it's necessarily something novel and sinister ... just that we never looked hard enough before to spot the anomalies elsewhere.( or they were seen as scientific curiosities rather than something to be blared out by speculative early 21st century media)

K