Researches, virtual bibliographies: 

An article in Jewish Virtual Library states that with the onset of World War II in 1938-39, Jewish newspapers were shut down and, in 1940, the publication of Judeo-Tajik books was terminated and Judeo-Bukharan schools were closed. The loss of Jewish culture led to increased assimilation into the local communities. Despite this, the Jewish community grew tremendously due to an influx of Ashkenazi Jewish refugees fleeing Hitler settled in Tajikistan.

Abdullaev, Kamoludin, & Akbarzaheh, Shahram: “Historical Dictionary of Tajikistan”, 2010, second edition, pg 383