The ECB will review security ahead of England's tour of Pakistan this autumn amid concerns over conflict in neighbouring Afghanistan.
Adil Rashid took four wickets for 35 and Pakistan finished on 154-6 after winning the toss and opting to bat first.
Have been reckless throughout my career, need to get better at consistency: England batsman Liam Livingstone
Liam Livingstone scored the fastest T20I century by an England player but failed to take the hosts over the line as Pakistan recorded a 31-run win in the first T20I.
Ben Stokes has revealed he played through ridiculous finger pain during the three-match ODI series against Pakistan.
England announced an overhauled 16-member squad for the series after Covid-19 cases in its original squad forced the players into quarantine.
This was the first ODI at Lord's since England's dramatic 2019 World Cup final win over New Zealand.
The PCB medical panel has advised the left-handed middle-order batsman to undergo a four-week rehabilitation programme before a reassessment is carried out.
Stokes was originally left out of the squad to focus on his recovery from a finger operation.
Haris, who has complained about an injury in the right leg, missed several practice sessions and both of the intra squad matches of the national team in Derbyshire.
Ben Stokes, who has been playing for county side Durham following a finger injury suffered on Indian Premier League duty, is now set to make his first England appearance since March.
Tests on Monday, a day after the team's last ODI against Sri Lanka in Bristol, revealed seven infections among three players and four staff.
England and Wales Cricket Board named an unchanged 16-player squad for the upcoming ODI series against Pakistan.
It joins other sporting events such as Wimbledon and the European Championship in a British government research program studying the effects of fan attendance as COVID-19 restrictions are eased.