Airport authorities are focused meanwhile on keeping passengers moving, in particular at inspection points aimed at detecting potentially dangerous objects and liquids.
The two officials, who met in San Jose, Costa Rica, also discussed advancing more fair and equal distribution of COVID-19 vaccines in the region, the government statement said.
Statistics agency IBGE said output declined 1.3% from the previous month, compared with the median estimate in a Reuters poll of economists for a 0.1% rise. March's figure was revised to a 2.2% fall from a 2.4% decline.
The report said among the new cases,10 reported from Rawal Town,9 from Potohar town,10 from Rawalpindi Cantt,4 Gujjar Khan,2 and one each from Jehlum and AJK.
The joint announcement by AstraZeneca and Siam Bioscience, a firm owned by Thailand's king, comes amid public anxiety about vaccine supplies, as the country suffers its most severe outbreak so far.
It did not say whether the Thai plant would make all 6 million doses that Thailand's government has promised would be available this month.
Johnson has previously warned that the swift spread of the B.1.617.2 variant of concern first identified in India could derail his plans to end England's COVID restrictions on June 21.
"I can see nothing in the data at the moment that means we can't go ahead with step four, or the opening up on June 21st, but we've got to be so cautious."