Rabies is officially erradicated in Portugal since the 1960's. I've searched for official data at: https://www.ecdc.europa.eu/en/publications-data?s=rabies

Most cases (we're talking 0-3 in a given year) in Europe seem to be imported from tourists or immigrants returning after being bit by a wild animal. This was the case in 2011 in Portugal after a dog bite in Guinea-Bissau (article in portuguese): https://www.publico.pt/2012/03/31/jornal/portugal-registou-c...

So looking at the data, it seems the little bats have been harmless for at least 60 years.