Ireland’s puzzling Covid infection rates

Sir, – Ireland: population five million; vaccination rate 92 per cent; population density 186 people per square mile; daily infection rate about 2,400 and rising.

New York City: population 8.4 million; vaccination rate 73 per cent; population density 27,000 people per square mile; daily infection rate about 800 and falling. Discuss.

– Yours, etc.

FRANK E BANNISTER,

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Donnybrook,

Dublin 4.