COVID-19 Global Roundup: How close are we to a cure?

While medical workers struggle to care for the rising tide of COVID-19 patients and politicians try to convince nearly half of the world's population to stay at home to slow the pandemic, everyone is waiting for one thing: a cure.

The approaches have varied dramatically. Some teams are looking at the effects of existing medicines as potential treatments, some are experimenting with repurposing common drugs. Others are using cutting-edge technologies to fashion radically new types of vaccines.

The WHO has selected four drugs or combinations for a large scale global trial involving patients from Argentina to Thailand.

These are the experimental antiviral treatment remdesivir; a combination of two HIV drugs, lopinavir and ritonavir; those two drugs plus interferon beta, an immune system medication; and the malaria drug chloroquine.

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