"Strain"? Like in "Vermin"?

Amnesty International’s UK branch highlighted Israel’s treatment of the Arabs of Judea and Samaria. It has planned an exhibition in London for next month directed against its security barrier. “Against the Wall” features art and graffiti on the wall in the West Bank “which cuts through Palestinian communities with devastating effect”, according to the publicity.

This week there was a meeting on Israeli policy in East Jerusalem entitled “Capital Murder: Inside the Israeli authorities’ regime of discrimination and control in Occupied East Jerusalem”.

Krystian Benedict, Amnesty campaign manager, in response to a question on apartheid, retorted:

“You should be careful about bringing up this issue of apartheid in South Africa when you are representing a particular strain of government that did a lot to sustain apartheid longer than it should have done.”

Strain?

Is the use 'strain' proper or is it a less-than-oblique spin-off from the Nazi terminology of 'Jewish vermin'?

On "Jewish vermin":

1.

we consider that it is much more urgent and necessary that the local groups should seek to operate first of all on their home ground and to sweep away Ostjuden* and Jewish vermin in general with an iron broom....

The Ostjuden must be got rid of without delay, and ruthless measures must be taken immediately against all other Jews...they should be placed in collecting camps....

Voelkischer Beobachter,
No. 20/34, March 10, 1920.

2.

"Exterminate the Jewish vermin"

1941