《科学》杂志说老年性痴呆是可以人与人之间传播的，英国家卫生研究院（NHS)居然说不接受新事物是早期症状之一

https://www.science.org/content/article/alzheimer-s-disease-may-have-been-transmitted-now-banned-hormone-treatments

For example, someone with early Alzheimer’s disease may:

• forget about recent conversations or events
• misplace items
• forget the names of places and objects
• have trouble thinking of the right word
• ask questions repetitively
• show poor judgement or find it harder to make decisions
• become less flexible and more hesitant to try new things

Later stage symptoms include increasing confusion and disorientation, obsessive or repetitive behaviour, or disturbed sleep.

Source: NHS