If you read the information leaflet in any drugs - which you should, but many of us don't - they will often list death as a potential side effect. Any drug which could cause anaphylaxis could result in death. There are risks to everything. I have blood tests every year to check my ... liver or kidney function, maybe both... because one of my prescribed drugs could cause problems, although to date hasn't.
There are risks to everything. Some risks we generally ignore, others we worry about more than is reasonable- we are rubbish at assessing risk, usually. Some people will read this story and think, "it made the news because it's rare, I don't really need to worry." Others will think, "I didn't realise this could happen, I'm not prepared to take something that could do this." And there will be some who say, " yes, it's a risk, but I want the results enough that I'm prepared to take that risk." None of these ways if thinking are wrong. You can only reach a decision based on your own ways of thinking, and the authorities will make overall decisions based on statistics and cost. A one-off death is unfortunate, but a pattern of them is quite a different matter.