Archive · 27 Aug 2026
Why Swine Flu Cases Rise During Monsoon Months
Influenza can spread easily when someone first becomes sick.
Adults may pass it to others for about three to five days after symptoms start.
Young children can stay infectious for longer.
During the monsoon, many different breathing-related infections can circulate.
This means every fever, cough or flu-like illness is not necessarily swine flu.
Doctors may recommend testing when it is medically appropriate.
Testing can be especially important for people at higher risk.
It may also be needed when symptoms become more serious.
Influenza is especially contagious around the beginning of illness.
Adults can generally remain infectious for about three to five days after symptoms begin.
Young children may remain infectious for longer than adults.
Not every monsoon-season fever, cough or flu-like illness is swine flu.
Testing may be needed for higher-risk people or those with more serious symptoms.
- Who
- Adults, young children, higher-risk people and people with serious symptoms are discussed.
- What
- Influenza and other respiratory infections circulate during the monsoon, but not every flu-like illness is swine flu.
- When
- During monsoon months, especially around the beginning of illness and for three to five days after symptoms begin in adults.
- Where
- India is referenced through guidance from the National Centre for Disease Control.
- Why
- Influenza is particularly contagious early in illness, while several respiratory infections circulate during the monsoon.
- Most contagious period
- Around the beginning of illness
- Adult infectious period
- Generally about three to five days after clinical symptoms begin
- Children
- Young children can remain infectious for longer
- Monsoon illnesses
- Several respiratory infections circulate during this period
- Important distinction
- Not every fever, cough or flu-like illness is swine flu
- Testing
- May be required when clinically indicated, particularly for higher-risk people or those with more serious symptoms
- Guidance source
- India's National Centre for Disease Control