Has Changing Climate Increased The Burden Of Pneumonia? Know From A Doctor

Climate change can worsen the symptoms of pneumonia, warns a doctor, adding that increased levels of suspended particulate matter can impact the immune system and allow a mild infection to progress to pneumonia.

Is there a link between climate change and an increase in pneumonia cases? The northern part of the country, specifically Delhi, is reeling under the effect of severe pollution brought about by multiple factors, such as the cold winter air trapping emissions, dust, and smoke from illegal crop-burning. With residents struggling to breathe, doctors recommend staying at home or wearing masks while stepping out to reduce the risk of respiratory issues, particularly pneumonia.

What Is Pneumonia?

Dr Pralhad Prabhudesai, consultant pulmonary physician at Lilavati Hospital, Mumbai explains that pneumonia is inflammation of the lung parenchyma, often caused by bacterial or viral infections.

"The infection leads to the formation of pus in the alveoli, resulting in symptoms like fever, chest pain, cough and breathlessness. While mild cases can resolve with appropriate treatment, severe cases -- particularly in individuals with compromised immunity -- can require hospitalisation, intensive care, and ventilator support with high-associated mortality rates," the doctor warns.

He adds that pneumonia is a prevalent respiratory condition, with a surge in cases seen across outpatient departments and ICUs. Community-acquired pneumonia (CAP) remains a significant concern in clinical practice.

Evolving Trends In Pneumonia

Pneumonia presentations are changing, says the doctor. The types of pneumonia vary throughout the year, influenced by seasonal shifts. CAP, however, continues to be a leading cause of respiratory morbidity.

Role Of Climate Change In Pneumonia

Climate change can worsen many health challenges, including pneumonia. It contributes to:

• Air pollution:Increased levels of suspended particulate matter impact the immune system, allowing mild infections to progress to severe pneumonia. Airborne pollutants also carry bacteria and viruses, further aggravating the risk.
• Wildfires and dust: Events like wildfires release dust and smoke into the atmosphere, creating conditions conducive to respiratory infections.
• Immune system alteration: Changes in water quality, food availability and overall immunity associated with climate change increase susceptibility to infections.
• Increased spread of infectious disease: The spread of pathogens due to temperature changes can lead to pneumonia. Even waterborne pathogens increase due to climate change.

Prevention Strategies

To mitigate pneumonia risk, especially in the context of climate change, a multipronged approach is essential:

• Reduce air pollution: Plant trees and adopt sustainable practices to minimise pollution.
• Vaccination: Annual flu vaccinations are critical, ideally administered between May and July before the monsoon. For high-risk individuals, a second dose in September-December may be beneficial. Vaccines targeting streptococcus pneumonia are vital, particularly for adults over 50-55 years.
• Other vaccines: High-risk adults should also consider vaccinations for shingles, diphtheria, pertussis and tetanus (DPT).

Lifestyle Modifications

Make the following healthy changes to your lifestyle:

1. Nutrition: A diet rich in protein can enhance immunity.
2. Exercise and yoga: Regular physical activity, meditation and pranayama bolster respiratory health.
3. Health habits: Adequate sleep, smoking cessation and avoiding excessive alcohol intake are crucial.
4. Improving air quality: Regular monitoring and avoiding pollutants.
5. Good hygiene practices: Washing of hands, bathing regularly, changing clothes.