On this World Health Day, which comes with the theme – ‘Building a fairer, healthier world’ – let’s look deep into the impact of the COVID-19 pandemic on global health and how it affected the health of millions of people around the globe.

As the number of patients, who are left experiencing symptoms months after being infected is on an exponential rise, scientists and doctors, across the globe are now beginning to urge the global community to focus on something called long COVID and even the World Health Organization is beginning to take note and initiate public health action against it. So, what is long COVID and why do you need to know about it urgently?