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New Covid subvariants BA.4 and BA.5 are the most contagious yet – and driving Australia’s third Omicron wave | Adrian Esterman

The latest variants are masters at evading immunity – meaning previous infection and vaccines are unlikely to provide much protection against catching it * Follow all our coronavirus coverage * Get our free news app, morning email briefing and daily news podcast Australia is heading for its third Omicron wave in the coming weeks, as BA.4 and BA.5 become the dominant Covid strains. BA.4 and BA.5 are more infectious than previous Covid variants and subvariants, and are better able to evade immunity from vaccines and previous infections. So we’re likely to see a rise in case numbers. Continue reading...

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