My plants are infected

[Aliamyz]

Hi everyone,

Recently,i just discovered that my plants are infected.At first i though they were sun burns but new leaves becoming red.

These plants are not grown under full sun,they are grown under shade cloth.So it's impossible for it to be sun burn.

The victims are:

Rafflesiana frilled tendril
alata 'surigao'
rafflesiana x veitchii

Here's some pics:






BTW,is there anything to do to save these plants?

Thanx!