Thanks a lot for your reply,
I had a look on the topic " Including observable data during COVID19 period into DSGE model", thus, I won´t include the data of 2020 in my bayessian estimation.
However, I found several papers that actually include these data (I attach one of them).
I am also doing a welfare analysis based on my estimation, and the ranking of monetary policy changes completely when I include 2020. So, I was thinking to make two different estimations, the first one taking into account 1966-2019, and the second one 1966-2020 and show both results. However, I am still not shure 
sustainability-13-03362-v2.pdf (1.2 MB)