According to many researches, people who have been vaccinated or previously infected with the Covid-19 are able to catch and spread the virus. That's the main reason why last month Spain's Supreme Court ruled against using vaccine passport to restrict access to public spaces. It's the first judicial authority to do so in Europe, as using vaccine passport to prevent access to public spaces may not be useful to prevent the spreading of the infection. In this perspective, it seems that Italian policy makers still pretend to misunderstand the EU principles of effectiveness, necessity and proportionality.
In many EU countries people who haven't a green pass are banned from public spaces, basic freedoms and services, although it is already clear that there is no difference between the vaccinated and the unvaccinated with regards to the Delta variant. In this context, it's easy to see that pharmaceutical and health product companies are spending billions on lobbying politicians around the world. At the moment, in Spain it is not the case.
In Italy, the protests against the Covid health pass have now been going for 10 weeks.