We always recommend downloading Android apps from official stores and nowhere else. But that doesn’t mean there are no viruses in the Google Play. It is true, however, that you’ll find fewer of them in the official store than on third-party sites, and they get removed on a regular basis.
How Google monitors the security of Android apps
It is no mean feat for malware to get into Google Play. Before they publish an app, moderators check it for compliance with an extensive list of requirements. If they find a violation, they ban the program from the store.