Here's an excerpt from an article in The Medical Journal of Australia - full article here
Influenza pandemics are a real risk and are best managed by self-isolation and social distancing to reduce the risk of infection and spread.
Such isolation depends on availability of food of adequate quantity and quality.
Australia has one of the most concentrated food supplies of any country, making rapid food depletion more likely in a crisis.
Food stockpiling by both authorities and citizens is an important safety precaution that should be given greater media coverage.
Food and nutrition guidelines are provided for survival rations in the event of a pandemic or other catastrophe."
Food supplies in the home will need to last as long as it takes for vaccine development and production. For ordinary seasonal influenza vaccines, there is a lag of 6 months or more after a new virus strain has first been discovered until a new vaccine is available for distribution. For weather-related catastrophes, food stockpiles might be required for much longer. A destabilised global climate, where small changes in atmospheric and ocean circulations have major consequences for temperature, rainfall, wind and storm patterns, may precipitate food stockpile dependence for several years.4 While long-term food stockpiling could be considered a governmental responsibility, we suggest that home stockpiling of food to last about 3 months might be done by individual households. This would allow a window of time for governments to put emergency action plans and food deliveries in place."
Dare I say - food for thought??!