Timeline (First Contact)

2020

 * May 25: Amidst the COVID-19 pandemic, the SETI detects a long radio signal coming from Gliese 667 Cc that appears to be of non-natural origin. The messages have what appear to be confused English words.
 * May 27 to May 31: Several radio messages are sent to SETI, including one pleading for help to deal with the catastrophic pandemic.
 * June 6: The aliens introduced themselves as the E'tals in a reply to Earthkind's SETI message. However, it won't be long before the first fleets of E'tal spaceships enter the Earth orbit.
 * June 10: The E'tals lands at New York City amidst confused onlookers. They soon promise more help for humans to deal with COVID-19.
 * June 20: Brave volunteers are sent to the E'tals for full emulations of human physiology to be transmitted to an E'tallian Matrioshka Brain located somewhere in the Scutum-Centaurus Arm, along with genetic sequence of COVID-19.
 * June 25: After five days of ancestry simulation, four candidates of possible viable combinations for a vaccine against the virus were found. As a result, some countries adopted it and directly skipped to expedited stage III trials in preparation for mass vaccination campaigns. Those candidates are named EV-1 (E'tal Vaccine 1), EV-2 (E'tal Vaccine 2), EV-3 (E'tal Vaccine 3) and EV-4 (E'tal Vaccine 4)
 * July 4: The FDA found that EV-2 (E'tal Vaccine 2) is the most effective vaccine against COVID-19 yet, with an efficiency of 95%.
 * July 15: Mass vaccinations underway, starting at US, Canada, European Union despite significant opposition to EV vaccines over safety concerns.
 * August 4: First human set foot on Mars with E'tal spacecraft. Her name is Abigail Harrison.
 * September 11: By this time over 60% of worlds population has received the vaccine. The pandemic is perceived as going to be over soon.
 * December 25: The WHO declares the end of pandemic emergency in relation to COVID-19.