"People shouting or talking on the phone can emit up to fifty times more particles," according to the Spanish National Research Council.
Several UK residents in Spain complained of being barred from flying to Madrid and Barcelona amid pandemic restrictions and confusion over post-Brexit documentation.
The registry, which will be shared with the EU, will not be made public and will be "done with the utmost respect for data protection," the country's health minister said.
The conservative opposition parties voted against the government's assisted dying bill, with one party claiming the law was "a defeat for everyone, a failure for our health system and our society".
Five hundred Barcelona residents attended a concert as part of a medical study to determine if same-day testing could help prevent COVID-19 spread at cultural events.
In this edition of Unreported Europe, we look at how Spain and Austria have been affected by the 'new poverty' created by the pandemic. We speak to people whose lives have been turned upside by the virus.
Gibraltar's Chief Minister Fabian Picardo has warned "life will change radically for the worse if there is no deal" agreed with the EU.