Black Cat Flu

"BLACK CAT FLU EPIDEMIC: First Cases Reported"

- Daily Prophet headline.

Black Cat Flu was a wizarding infectious disease presumably of the influenza viruses family.

There was an outbreak of Black Cat Flu in 1996 in wizarding Britain; the first cases were reported in January.

Appearances

 * Harry Potter and the Order of the Phoenix (film)
 * The Making of Harry Potter