Are those in isolation properly monitored?

I SEE daily reports of Covid-19 cases increasing and I am wondering how authorities at the Health Department and National Control Centre are monitoring those who tested positive and were told to self-isolate in their homes.
Are the authorities closely monitoring those who are self-isolating?
The increase in cases suggests that those in self-isolation are not strictly adhering to the health measures.
Where are the hot spots?
Those who are self-isolating should be closely monitored.

Concerned