The UAE reported 1,390 new cases of Covid-19 on Tuesday, taking the total tally of infections to 127,624. Health officials also announced 1,708 recoveries. So far, 122,458 people have recovered from the virus. Authorities announced the death of two patients. The total death toll now stands at 482. The Emirates carried out 110,807 additional tests in the past 24 hours. There are 4,684 active cases in the country. More than 12.6 million Covid-19 tests have been conducted across the country since the beginning of the outbreak in January. A new research by Imperial College London showed that immunity to Covid-19 may only last for a matter of months. Researchers said the results could point to a decline in the immunity of the population, leading to a heightened risk of reinfection. Patients who have recovered need to take all precautions to protect themselves from contracting the virus again. This also means people may have to get a booster dose of the vaccine to increase immunity once it is rolled out in the market. Currently, the vaccine is in phase-3 trials in the UAE and officials expect to see a vaccine on the global market by late this year or early 2021. The UAE was the main vaccine trial partner for Chinese drug maker Sinopharm, providing thousands of volunteers for a Phase III trial. A number of government officials including the Minister of Health have received an early approved version.