What period are you interested in? Are you thinking of a particular epidemic eg. 1849? Is it about burial at night in mass graves and cholera burial grounds?
The 1855 Epidemic. In particular, the outbreak at Shorncliffe Barracks. 41 people died in this outbreak.
I have been told they were buried in what is now Shorncliffe Military Cemetery, but have no evidence.
The connection to Saltwood is that some of the soldiers may have been based there. The connection with Sandgate is the epidemic may have spread from there up to the barracks.