According to the WHO(1), there are currently around 150 vaccines under development. These include candidates being developed by public biotech and pharmaceutical companies like Moderna, Johnson & Johnson, AstraZeneca, Pfizer, Sanofi and GlaxoSmithKline to mention a few of the more promising candidates. Vaccines typically take many years to develop, mainly because they have to be proven to be safe and to have the desired effect. However, with governments around the world pushing companies to develop a vaccine in record time, we can hope to have one ready much sooner. How soon is difficult to say, but many researchers are hopeful that a vaccine can be ready sometime early next year.
In addition to the vaccine race, a similar number of antiviral drugs or treatment options are being examined. These include new treatments, like antibody therapies being developed by Regeneron Pharmaceuticals (REGN-COV2), among other, and blood plasma from recovered COVID-19 patients. In addition, drugs that are already on the market, like anti-malaria drugs (Hydroxychloroquine), certain arthritis drugs, flu medicine and a drug produced by Gilead Sciences (Remdesivir) which was originally developed as a treatment for Ebola, are being examined. So far, most of these studies have not resulted in much. However, a recent study carried out at the University of Oxford proved that a low-cost anti-inflammatory drug called Dexamethasone, which is widely used today to treat conditions like rheumatism, asthma and allergies, had a positive effect on patients who needed breathing assistance, making it the first treatment option with life-saving results.
What about herd immunity? Here most estimates indicate that we still have a very long way to go. Many researchers indicate that more than 60% of the population would need to have had the infection before herd immunity is reached (and that is assuming that once a person is infected, that person is now immune against further infection, something which is not certain to be the case). If we look at the US for instance, around 0.8% of the population has been confirmed infected as of now (globally this number is only slightly above 0.1%). This number is likely vastly understated, as the US Centers for Disease Control and Prevention (CDC) estimates that only one in every ten infections is being detected. Still, this means that the number of infections so far is less than 15% of what is needed for herd immunity in the US.