Cross contamination can happen. It is the process in which the microorganisms can be transferred from one substance to another and causing a dangerous effect especially on food thus the answer is Canned goods should be free of dents and any bulging lids to avoid this.
If the neurons are harmed during amputation, it can take longer to grow a new axon, therefore, it will take longer to reestablish innervation.
It really depend, according to which standard you're basing it upon.
If you're basing it on Developed country standard than it's true. Currently the south African still has not provided enough welfare for the poor and underprivileged. A lot of their people still has not got their healthcare , a lot of infrastructure are not well taken care of, etc. But we have to remember that South Africa is still a developing country , and there are some countries which condition are way worse than the south African.