Why is it that during changing weather, one is advised to avoid closed, crowded and air conditioned places like cinema halls etc?

Explanation

### Step-by-Step Solution:

1. **Understanding Changing Weather**: During changing weather, such as the transition from winter to spring or summer to fall, the environmental conditions fluctuate significantly. This can include changes in temperature, humidity, and overall atmospheric conditions.

2. **Increased Prevalence of Infectious Agents**: During these transitional periods, the prevalence of infectious agents, such as viruses and bacteria, tends to increase. This is because certain pathogens thrive in moist conditions, which are often present during these weather changes.

3. **Moist Conditions Favor Pathogen Growth**: The moisture in the air during changing weather provides an ideal environment for pathogens to grow and multiply. This can lead to a higher risk of infections spreading among individuals.

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