But people may need additional protection if they are traveling to high-risk countries, handle poliovirus specimens in a laboratory or have close contact with a person who has polio.

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Transmission to humans is extremely rare, but possible if a person is in close contact with an infected animal, the Food Standards Agency said.

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"Of most concern... is the fact that the different clusters seen in multiple countries increasingly support the hypothesis that when there is close contact this novel coronavirus can transmit from person to person, " the World Health Organization said on Sunday.

BBC: Coronavirus

And because he and his son, Eldad, had long ago severed all contact, and because apart from this family he had no person close to him, he had decided last year to liquidate his apartment on Mt.

NEWYORKER: Heirs

Physical care brings a caregiver into close personal contact and that can give rise to emotional attachment beyond fondness for a kind person helping.

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