The coronavirus (COVID-19) pandemic has challenged the world. But although there is an overload of information, there is still much that is unknown. Aggressive testing in South Korea and Germany, and massive early lockdown in New Zealand contained the virus early. But questions remain about whether and how containment and immunity work. For countries in lockdown, it is not clear what the best exit strategy is.
The sobering reality is that there is likely to be recurring waves of contagion, similar to the 1918 H1N1 “Spanish flu”, the 1957 H2N2 “Asian flu” and the 1968 H3N2 “Hong Kong flu”. As a result, many countries could face a series of rolling school closures over the next months or even year………………….