COVID-19 vaccine makers told Congress on Tuesday to expect a big jump in the delivery of doses over the coming month, and the companies insist they will be able to provide enough for most Americans to get inoculated by summer.

Though the number of new Covid-19 cases globally has fallen for the third week in a row, the World Health Organization (WHO) has urged countries not to let up efforts to halt the virus.

Pakistan on Monday announced to lock down east Punjab province hours after locking down south Sindh province to curb the spread of COVID-19 after the number of infected patients rose above 800 across the country, officials said.