the previous us$14.38 million grenada owed to the lender. another loan of $5.9 million was secured through the caribbean development bank. airports on march 22, grenada's international airport and carriacou's regional airport were closed to all commercial passenger traffic, and remained so through the 2020 summer. with the stoppage of passenger flights, courier mail services (such as the usps and royal mail) were halted, with only private courier flights like fed-ex and dhl allowed. on may 29, it was announced that june 30 was the anticipated opening of the borders (and thus, airports), with the expectation that all incoming passengers would receive a temperature check, rapid antibody test, and would self-quarantine for 14 days after arrival. a mobile app will be employed to monitor symptoms and movements of individuals during their quarantine period. on june 26, clarice modeste-curwen, minister for tourism and civil aviation, announced that the airports were prepared to reopen. however, in a speech to the nation two days later (june 28), prime minister keith mitchell stated international travel would likely not commence until early august, citing the resurgence of the virus in the united states (a major source country for grenada's tourism) and the refusal of international airlines to require passenger testing prior to boarding. public transport public bus transport was allowed to recommence on june 1, but with reduced passenger loads (12 people max, including driver and conductor—later increased to 15). on june 10, 2020, the government claimed to have paid $360k in stimulus to bus drivers, equating $800/month per bus. the bus association has thanked government for this stimulus, but (noting the stimulus will end once bus operations restart) they requested a price increase of $0.50/passenger going forward to offset losses of enforced protocols, emergency power curfews, and suppressed passenger traffic in general. no agreement was reached, so buses restarted operation without further government support. vaccination grenada received its first doses of the astrazeneca vaccine in february 2021, but its vaccination rate remained low amongst other caricom nations. on 19 august 2021, the united states confirmed the delivery of 29,250 doses of the pfizer–biontech vaccine to the government of grenada. as of 2 september 2021, number of persons vaccinated (1st dose)- 26,088 and number of persons vaccinated (2nd dose)- 19,372. as of 3 september 2021, number of persons vaccinated (1st dose)- 26,545 and number of persons vaccinated (2nd dose)- 19,450. during the wave of new cases, vaccinations increased dramatically, with over 5000 first doses administered between august 18 and september 7. on 19 november 2021, argentina formalized its donation of 11,000 doses of the oxford-astrazeneca vaccine to grenada, which amounts to about 10% of grenada's target population for vaccination.