This answer may not fully answer your question.
Have you seen the Plot a confidence ellipse of a two-dimensional dataset? Here they use plotting an ellipse for a two-dimensional dataset.
or if you are looking for data points to plot
you can use the parametric equation of an ellipse and generate random datapoints
x = u+a.cos(t) ; y = v+b.sin(t)
import numpy ...
There is a large body of research and data around COVID-19. Help the global community better understand the disease by getting involved on Kaggle.
Datasets in Kaggle related to COVID
COVID-19 Open Research Dataset Challenge (CORD-19)
UNCOVER COVID-19 Challenge