1 / 8Pfizer, a US-based company, claims that only 12 percent of vaccines are effective, not 95%. This has caused a stir all over the world, including in the United States.2 / 8The corona vaccine developed by Pfizer is used mainly in the United States and some other countries. However, the US media has claimed that the vaccine is not very effective after some documents related to it came to light.3 / 8At a time when the number of corona patients in India has crossed one lakh, the central government had started talks with the companies to make the modern and Pfizer vaccines available in the United States.4 / 8However, the negotiations fizzled out on the condition that the companies would not take any responsibility and would not pay any compensation for any adverse effects of the vaccine on anyone. Vaccines were developed by India and later given the Russian 'Sputnik' vaccine.5 / 8The United States has said that Pfizer's Corona vaccine was hastily approved for emergency use in various countries. The company has not yet commented on the information provided in Pfizer Papers.6 / 8The refusal of the Pfizer vaccine to enter India saved the lives of many citizens, such reactions surfaced on social media after the Pfizer papers came to light. Many netizens have thanked Prime Minister Narendra Modi's government for not allowing the Pfizer vaccine to enter India.7 / 8The carotenoid vaccine, developed by Johnson & Johnson, is once again embroiled in controversy. The US Food and Drug Administration (FDA) has ruled that the vaccine can be given to patients who are at risk of developing blood clots.8 / 8According to the administration's decision, the vaccine can only be given to adults who have not received the vaccine, or who have expressed a desire to receive the vaccine. The administration has once again reviewed the side effects of the vaccine.