What are the viruses that start with C and have 6 letters in thier name?

Corona

Is this for a crossword? Have you got any hints for any of the letters from intersecting words?

Coryza.

“Common” cold.

Cactus
CG18–20
Clo Mor
Cowpox
Cynara

“Corona” is a bit of a stretch, it seems to me. “Coronavirus” is the name of a type of virus, the current preoccupation being about one called “COVID-19” by the World Health Organization.

“COVID is short for coronavirus disease. The number 19 refers to the fact that the disease was first detected in 2019. The technical name of the virus that causes COVID-19 is severe acute respiratory syndrome coronavirus 2, abbreviated as SARS-CoV-2. COVID-19 is genetically related to, but not the same as, the virus that led to the SARS outbreak in 2003. SARS is deadlier than COVID-19, but less infectious.” – https://www.dictionary.com/e/tech-science/covid-19/