Plague and membership of Jamaat
In the name of Allah, the Gracious, the Merciful
There is none worthy of worship except Allah, Muhammad is the Messenger of Allah
Muslims who believe in the Messiah,
Hazrat Mirza Ghulam Ahmad Qadiani (as)

I could see that there is an extra-ordinary increase in the membership of the Jamaat. And it is due to the bubonic plague. There are people applying for initiation who have already been struck by the plague. They write to say that at the moment they are suffering from the plague and therefore just writing to say that they should be initiated into the Jamaat. If they survive this plague they will come in person and get themselves initiated at my hand.

There are thousands of people who have joined the Jamaat in this condition.

(Malfoozat, vol. 7, pg. 6)