You can be informed about all the key developments regarding the coronavirus measures in Greece, and the re-opening of the country to international tourism on: https://www.greece-is.com/when-can-i-travel-to-greece-again/ which is regularly updated.
Statistics in Greece with regards to COVID-19
You can find how Greece is performing in regard to Covid-19 cases following the bellow link. (statistics are daily updated):
Vaccination timeline in Greece
Τhe vaccination for covid-19 has already started to take place in Greece from 27 of December 2020. Greece has received the first batch of coronavirus vaccines developed by Pfizer and Moderna. Vaccines from Astra and Johnson & Johnson are in the process of being approved by the European Medicines Agency as well.
The pace which citizens are been vaccinated is growing. Furthermore, strict measures are still take place in order to minimize the spread of the virus.
Happily, after one year of sacrifices, we see the evolution of this pandemic coming close to an end.