portuguesa officials imposed a weekend lockdown in lisbon after a spike in cases.ials say countries might act if the health situation deteriorates. >> it has been made clear by the emergence of new viruses. this is why we are proposing an emergency brake which allows member states to reintroduce measures. >> it is a balance for the eu as it works to minimize health risks while reinvigorating, -- economies. after a year, the key is european officials say people remain vigilant. >> a security force is patrolling the streets as the country lockdown for one week to try to stop a surge of covid 19 cases. the transport is closed and central services and some factories continue to operate. the rise in infections is driven by the delta variant, fully transmissible. hospitals are struggling in areas along the border with india where the variant was first detected. some rural towns have reported infection rates of 70%. more than 14,500 deaths so far. more from the capital. >> a record spike in the delta variant has prompted the government to call for a shutdown. over the wee