The variants of coronavirus is wreaking havoc in the world. Germany has extended the lokdown to prevent the spread of the deadly virus. Chancellor Angela Merkel on Thursday defended the extension of the nationwide lockdown until March 7 in Bundestag and called on Germans to be "extremely cautious" and warned of the "dangers" of corona variants. The german chancellor warned that the new mutations, which are already present in Germany, "may destroy any success" already achieved by the months-long lockdown. She also defended the use of infection rates to determine when it is safe to ease lockdown measures. She said, "I really support the fact that when it comes to further openings and re-openings we've decided on the basis of these new mutations, not to give dates, but to give infection rates." She further added, "My target is that any new wave that might happen if the new virus strains become dominant, we mustn't give that room, we mustn't end up with another two-digit exponential growth." As per the German lockdown rules, all nonessential shops and services are currently closed, as are schools, while workplaces have been urged to send workers home, reported DW News Agency. Under the new rule, people have to wear medical masks or FFP2 filter masks when entering shops or using public transport and contact is limited to one person outside of the same household. Also Read: US condemns China for banning BBC World News People injured in supermarket explosion in Russia's Vladikavkaz Jammu-Kashmir joins hands with UK space agency for impact-based flood prediction