US-based biotechnology company Moderna, has claimed that its Covid-19 experimental vaccine has shown positive results. The company working with the US National Institutes of Health to develop the corona vaccine, says its experimental vaccine, MRNA 1273, produces antibodies that can kill coronavirus in patients. According to the NIH, preliminary results show that the antibodies produced by the vaccine are similar to those of patients who have recovered from the coronavirus. Clinical data also show that corona can be treated with the antiviral drug Ramdisiver, but the drug is still in the testing phase. The drug has so far been approved by the World Health Organization and the US Federal Drug Authority only in-hospital emergencies. It can be mentioned here that a Pakistani pharmaceutical company FerozSons has also obtained a license to manufacture Ramdisiver. Meanwhile, on the other side, Oxford University's corona vaccine trial has failed. The vaccine was given to six monkeys on an experimental basis, but the coronavirus was found in the same amount as in the three monkeys who did not receive the vaccine.