Which of the following statements about Rickettsiae is true?

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They reproduce inside living host cellsThey are spread through arthropod carriersThey are susceptible to treatment with tetracyclineAll of the above are correct

Explanation

Rickettsiae are bacteria that multiply within living cells, are transmitted by arthropods such as ticks and lice, and respond well to tetracycline antibiotics. Therefore, all the listed statements are accurate.