Personal Accident Insurance

Any dads here purchase Mindef Aviva Group Personal Accident insurance for yourself and your dependants? It's cheap at $1 per month for $100,000 coverage per person, and we can buy same coverage at this discounted price for our wife and children. Details here: https://www.aviva.com.sg/en/mindef-and-mha/group-personal-accident/ However when I explore further, the Mindef Aviva group personal Accident insurance does not cover events such as Food Posioning and Hand food mouth disease yet. Not sure if it's possible to add on coverage for Food Posioning and HFMD etc?