Could a recent MMR vaccine provide some protection against COVID-19 virus?

Some British researchers speculate it might:

Sample quote

Scientists from the University of Cambridge have suggested that the vaccine against measles, mumps and rubella (MMR) could be helping drive a protective immune response against SARS-CoV-2. MMR is typically given to all infants from nine months of age, so this hypothesis would fit nicely with the observation that children seem to be remarkably resistant to COVID-19.

Analysis of the structure of key proteins in measles, mumps and rubella viruses has shown that there is some unexpected similarity with certain proteins in SARS-CoV-2. In particular, the "spike protein" of SARS-CoV-2 is 20% comparable to the measles "fusion protein." It isn't known whether this is close enough to drive a cross-reactive immune response, but this is likely to be the focus of future research.

From an article that also mentions the BCG vaccine that several prior posts in this thread have been about.

https://medicalxpress.com/news/2020-04-coronavirus-pandemic-vaccines.html