nCoV_info

[no answers yet)

can you get it twice ?
   there was one headline, that it could be even worse the 2nd time
  (I assume it's rare)
can you get it twice in the same season ? How long lasts immunity ?
what's the expected vaccine efficiency ?  [they claim 90% for the MERS-vaccine)
   the SARS vaccine protection holds ~ 2 years
is it seasonal, will it wane in summer ?
  China uses a math. modeling which includes temperature
  for SARS : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3265313/pdf/AV2011-734690.pdf
masks
  masks and respirators reduced the risk of SARS-infection by 88% in this study
  https://academic.oup.com/cid/article/65/11/1934/4068747