Answer

In the Name of Allah, Most Gracious, Most Merciful. 

All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.

In this fatwa:

1- If no cases of Coronavirus (COVID-19) have been reported and instructions banning gathering and meeting have not been issued, there is no harm in going to the mosque.

2- Yet we recommend that you keep an eye on the instructions issued by health organizations in your city.

Answering your question, the European Council for Fatwa and Research, states:

The rule is that one should abide by the instructions issued by the authorities and health organizations based in his city.

In the case when people are leading their lives as usual, no cases of Coronavirus (COVID-19) have been reported and instructions banning gathering and meeting have not been issued, there is no harm in going to the mosque.

Yet we recommend that you keep an eye on the instructions issued by health organizations in your city.

Is It Permissible to Avoid Congregational Prayers Due To Coronavirus?

If they ban meetings, then stay at home and offer your prayers there. Offer Zhuhr prayer instead of Friday prayer and offer your prayers in a congregation made of your family members.

In this case, prayers in the mosques should be suspended in order to protect people’s lives. Allah says: “and make not your own hands contribute to (your) destruction.” (Al-Baqarah 2:195)

Almighty Allah knows best.

Source: https://www.e-cfr.org/