@WHO: Dr @mvankerkhove shares the latest update on: 1️⃣ Omicron sub-lineages BA.4 and BA.5 2️⃣ Omicron sub-lineage BA.2.12.1 3️⃣ The importance to maintain, and even enhance, surveillance and sequencing to track #COVID19 evolution

@WHO: Dr @mvankerkhove shares the latest update on: 1️⃣ Omicron sub-lineages BA.4 and BA.5 2️⃣ Omicron sub-lineage BA.2.12.1 3️⃣ The importance to maintain, and even enhance, surveillance and sequencing to track #COVID19 evolution

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