The rule regarding friday congregational prayer is as follows:
1- The friday prayer can not be organized in two separate places within the 1 farsakh ( approximately 5 km) radius. Therefore this condition not for participants rather simply it’s about or agonizing two Jamat’s in same area.
2- Praying Friday prayer is Wahib e Takhiri ( obligation which has choice) it means when someone has offered his Friday prayer not for him no need to offer Zohr Salat and if Zohr salat has been offered now Friday prayer can’t be offered with the Niyyat of Wajib ( but Yes with the Niyyat of Mustahab one can offer like travelers).
3- Leaving Friday prayer with any genuine reason is not allowed and it differs person to person so everyone should decide is it possible on not for him. If we can go to office in extreme cold weather or while having normal flu or cold and fever then why not be there in Friday prayer?
Yes it has said said Friday prayer was Wajib when Prophet (saww) and Aimmah (a.s) were present but during major occultation it’s not Wajib aini but it’s Wajib Takhiri but its Obligation has not completely changed especially when all conditions are meeting with a person to have participation in it.