See all > Living & wellness
March 31, 2020 • read
When will a vaccine for COVID-19 be available?
In our previous article about COVID-19, we covered everything you need to know about the disease’s signs, symptoms and treatment. Since then, one of the most common questions we’ve received is “when will doctors have a vaccine?”
Currently, doctors are treating COVID-19 with supportive care. That means a patient’s vital signs, such as heart rate, blood pressure, breathing function, and temperature, are monitored and stabilized. It’s up to the patient’s immune system to fight off the virus.
What’s reassuring to know is that 81% of COVID-19 cases are mild. Some people won’t even know that they’re sick. And this is part of the danger. It means groups of people who have a mild form of the illness can easily spread it to those who are at higher risk, like those who are older in age, or have pre-existing health conditions. That’s certainly not to say that these are the only groups at risk — even young healthy people have been rushed to hospital.
That’s why social distancing and practicing good hygiene are so important: they’re the best strategy we have to lower the number of new infections. And at this point, there is no cure or vaccine for COVID-19. The good news is that there’s a concerted international effort underway to quickly develop a vaccine. But how long before it’s publicly available? We’ve got the latest facts on the situation here.
What is a vaccine?
There are several types of vaccines, but they all work on the same basic principle. Scientists isolate a virus and make changes to it so it’s no longer harmful to humans. Then, doctors administer the altered pathogen to patients. The patient’s body recognizes the vaccine pathogen as foreign, and develops antibodies to neutralize the threat. If the patient is exposed to the full-fledged version of the virus later on, their body knows how to fight it off.
After a prototype vaccine is developed, scientists determine the right dosage to give to patients. Then, the vaccine enters three rounds of testing. First, the vaccine is tested on healthy people with low risk of complications. Then, the vaccine is tested on it’s intended patient group, such as children in the case of the chickenpox vaccine. Finally, the vaccine is tested on a wide range of individuals from various geographic locations and lifestyles. After all this testing is complete, the vaccine is distributed. Scientists continue to test the vaccine on an ongoing basis to ensure it’s still working properly and is not causing unintended complications.
Timeline for a COVID-19 vaccine
The World Health Organization estimates that a vaccine for COVID-19 will be ready in 18-24 months. While this might sound like a long time, it’s actually pretty speedy for vaccine development. Most vaccines hit the market after 5-15 years of development and testing. If scientists can achieve their goal of 18 months, it will be an impressive feat.
Over 35 companies and academic institutions are currently working on developing a COVID-19 vaccine. The Coalition for Epidemic Preparedness Innovations (CEPI), and the World Health Organization are helping to coordinate and accelerate these efforts.
Since the novel coronavirus shares genetic similarities with SARS (Severe Acute Respiratory Disease) and MERS (Middle East Respiratory Syndrome), scientists have a head start towards a COVID-19 vaccine. They can leverage the existing body of research on previous coronaviruses to develop a vaccine faster.
4 vaccines have already entered animal testing trials. One of these vaccines, developed by Boston-based biotech firm Moderna, will soon enter human trials and Johnson & Johnson just announced a human trial that is expected to begin in September.
Scientists are looking into two drugs for their potential in treating patients with active cases of COVID-19. The first is Remedsivir, which is used to treat Ebola. The second, Chloroquine, is an anti-malaria drug.
Chloroquine has seen modest results in helping patients with COVID-19 recover quicker by preventing the coronavirus from attaching to lung cells.
Remedsivir has been used in compassionate care, for when patients have few options left. Some patients who’ve taken it have shown great recoveries. The medication works by interfering with RNA replication within the coronavirus.
More testing is needed to confirm the long-term effectiveness and safety of both these drugs. In the meantime, we’ve listed below the best steps to protect yourself from catching the virus.
The best solution for now
Practicing social distancing and frequent handwashing is the best course of action against coronavirus that you can take right now.
According to epidemiologists, if it were possible to wave a magic wand and make all North Americans freeze in place for 14 days while sitting six feet apart, the whole pandemic would sputter to a halt. The virus would die on every contaminated surface, and every person carrying the virus would display concrete symptoms. They could then be isolated and treated, and the virus would be contained.
In lieu of standing still for two weeks, you can do your part to stop the spread of coronavirus by staying at home and following official health recommendations:
- Wash your hands regularly, for at least 20 seconds each time
- Avoid leaving your home for non-essential trips
- Practice social distancing
- Take steps to boost your immune system
If you’re feeling sick, it’s important to take extra precautions in addition to the above:
- Cover your cough with a tissue or elbow
- Self-isolate (more on that here)
- Visit a healthcare professional virtually if possible or call your local public health authority. Try to avoid in person facilities unless you are experiencing severe symptoms.
- Monitor your symptoms for 14 days, even if they’re mild
- Wear a face mask when around other people
Scientists are working around the clock to develop a vaccine for COVID-19, but unfortunately we can’t expect a finished product for at least 18 months. In that time, the coronavirus pandemic may be long behind us. In the case of SARS and MERS, vaccines for both illnesses were in development, but production halted when the outbreaks were eventually contained.
In the meantime, it’s important to self-isolate, monitor yourself for symptoms and practice good hygiene. We as a community are the best bet to suppress COVID-19.