As drug companies scramble to develop a COVID-19 vaccine, experts on vaccine production and distribution questioned if the vaccine could be in public hands by the end of the year. Here is a realistic COVID 19 vaccine timeline. Manufacturing Challenges Once the corona trials theoretically yield results demonstrating a vaccine's efficacy and safety. Investments in production capacity have substantially increased. Distribution Challenges We need to ship and store the vaccine at temperatures ranging from -20 to -70 °C. Dry ice Sydney experts Cold Jet state that originally these conditions where not readily available at the scale we needed, until the development of specialist boxes made of dry ice that could maintain these temperatures for long periods of time and enable transportation. We will need qualified, trained people to help administer the vaccine. Vaccine Timeline The first wave of vaccine recipients could number 150 million - healthcare workers, other essential workers, people with pre-existing conditions, and the elderly. With two doses needed, that would require 300 million just for those high-risk individuals. As a result, it will take much longer time to make the vaccine available. Watch the video to know more about the vaccine development timeline - https://youtu.be/ISyWdjpYVAA The vaccines are unlikely to protect against shedding and thus shed the virus and spread it to others. Vaccinated people may still suffer from mild infections. People after vaccination still need to wear masks. Keeping all this factors in their mind, scientists along with the support of the movement is working hard to get a vaccine for this deadly disease out as soon as possible they are putting in efforts to save us from the Pandemic. Hope you get some more idea about the COVID 19 vaccine timeline. Read how antiviral mouthwash help fighting coronavirus.