Wrote Letter L-577 of 1722-06-13 to James Jurin, a cover letter for Letter L-576, expressing doubts that inoculations protect against smallpox

Leeuwenhoek did not publish any letters after 1718 in book form with his own summaries. The summary below comes from Alle de Brieven / Collected Letters.

Leeuwenhoek responded to James Jurin’s letter of 15 May 1722. No one whom Leeuwenhoek knew in Delft could translate Leeuwenhoek’s letters to Latin, as Jurin had requested. Leeuwenhoek doubted that inoculations protect against smallpox, using his daughter’s experience as an example. He promised to investigate Hans Sloane’s question about whether there are little animals in scabrous skin. Leeuwenhoek returned the greetings of John Chamberlayne. He added a postscript about sending future numbers of Philosophical Transactions via a Rotterdam merchant.