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Published on: Oct 28, 2020
2 minute read
By: Dr Rajan ( Medical Second Opinion Cell)

COVID: A Reminder To Stay Safe

COVID: A reminder to stay safe

As we approach the second wave of COVID, we need to remain vigilant with our actions to prevent the spread of the virus. We are continuously reminded about wearing a mask in public, maintaining socially distant, and not engaging in risky behavior such as large gatherings. But today we will focus on other forms of transmission. COVID is primarily transmitted by airborne droplets, but spreading the infection through infected surfaces is still feasible. Here we will look at three articles that investigate this mode of transmission.

SARS-COV-2 Survives for 28 days on surfaces

This study by Australian scientists has found that SARS-CoV-2 can survive on surfaces for up to 28 days. The team investigated using the same amounts of virus found on infected individuals, interacting with surfaces such as cotton, paper, stainless steel, glass, and vinyl. Such materials were chosen as they represent commonly touched objects such as mobile phones, ATMs, supermarket checkout regions, items that may not be cleaned regularly enough. Previous research showed the virus could be detected in aerosols for up to three hours, and on plastic and stainless steel surfaces for up to three days.

This study found the virus may survive as long as a week on most surfaces, with enough potency to re-infect. Even after two weeks, there were still plenty of detectable viruses. On other surfaces such as banknotes, the virus could survive as long as a month. The survival of the virus is also potentiated by colder temperatures. The virus is far less likely to survive at 30C than at 6 C, a worrying finding for countries currently approaching winter.

Survival of SARS-CoV 2 on the human skin

We know our skin is host to millions of different bacteria and viruses, but the conditions created by the body alongside the degree of microbial competition actually makes it quite a hostile environment for pathogenic microbes. Hirose et al looked to investigate how well the SARS-CoV-2 virus survives on human skin, using a model. They found that SARS-CoV-2 and the influenza A virus were destroyed more quickly on the skin than other surfaces such as steel, glass, and plastic. However, COVID lasted over 4x longer on skin compared to Influenza A (9 hours vs 1.8 hours).

More importantly, ethanol compounds were found to inactivate SARS-CoV-2 within 15 seconds on human skin. This highlights the importance of regular hand washing, even if with alcohol gel. Taking this in mind, it is useful to keep small bottles of alcohol gel on a person when traveling in public and using it regularly. After all, if you are touching door handles and other items that hundreds of other people may have touched before you, potentially with poor hygiene, it is safer to regularly disinfect.

Low risk of COVID transmission by fomites in real life conditions

Having taken these studies into account, it is quite difficult to quantifiably measure transmission from surface to a person. Knowledge of this transmissibility is quite important, especially to those working in a hospital environment. A review by Mondelli et al published in the prestigious journal The Lancet (Infectious Disease) describes two sequential studies to looking at the possibility of contamination of surfaces in an infectious disease ward of a major Italian hospital, and also whether risk of transmission was higher in emergency rooms and sub-intensive care wards.

These studies found there were very few surfaces in the hospital through which positive swabs could be taken, suggesting contamination was low. Of course the hospitals were running standard cleaning procedures, with regular wipedowns of commonly toughed objects. This again highlights the importance of maintaining hygiene, and how adequate cleanliness can significantly reduce the risk of infection.

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Chest Pain While Breathing: Causes, Warning Signs, and When to Seek Urgent Care

Chest pain is one of the most alarming symptoms a person can experience, especially when it worsens during breathing. Chest pain while breathing, also known as pleuritic chest pain, often indicates involvement of the lungs, chest wall or surrounding structures. While some causes are mild, others can be life-threatening and require immediate medical attention.

In India, respiratory infections, air pollution, sedentary lifestyles and delayed medical care contribute significantly to chest-related symptoms.

What Does Chest Pain While Breathing Mean?

Chest pain while breathing refers to pain that:

worsens with deep inhalation or exhalation
may feel sharp, stabbing or burning
can be localized or spread across the chest

Pain intensity often increases with coughing or movement.

Common Causes of Chest Pain While Breathing

Lung Infections (Pneumonia)

Pneumonia inflames lung tissue and surrounding membranes.

Symptoms include:

chest pain while breathing
fever
cough
breathlessness

ICMR data identifies pneumonia as a major cause of respiratory illness in India.

Pleuritis (Inflammation of Lung Lining)

The pleura are thin membranes surrounding the lungs.

When inflamed:

breathing causes friction
sharp chest pain occurs

Pleuritis often follows viral infections or pneumonia.

Pulmonary Embolism

A blood clot in the lungs causes:

sudden chest pain
rapid breathing
severe breathlessness

This is a medical emergency requiring immediate care.

Chest Wall Muscle Strain

Muscle strain due to:

heavy lifting
intense coughing
poor posture

can cause pain during breathing or movement.

Costochondritis

Inflammation of rib cartilage causes:

localized chest pain
pain worsened by breathing or pressing on the chest

This condition is painful but not life-threatening.

Pneumothorax (Collapsed Lung)

Air leakage into the chest cavity causes:

sudden sharp chest pain
breathlessness

Often seen after trauma or in individuals with lung disease.

Heart-Related Causes

Though heart pain usually does not worsen with breathing, conditions such as:

pericarditis (heart lining inflammation)

can cause chest pain that changes with respiration.

Acid Reflux and Esophageal Spasm

Gastrointestinal causes may mimic chest pain.

However:

pain usually relates to meals
breathing-related pain should be evaluated carefully

Anxiety and Panic Disorders

Anxiety can cause:

chest tightness
rapid breathing
discomfort while breathing

Medical causes must be ruled out before attributing pain to anxiety.

Warning Signs That Require Emergency Attention

Seek immediate medical care if chest pain while breathing is associated with:

sudden onset
severe breathlessness
bluish lips or fingers
dizziness or fainting
sweating
coughing up blood

These may indicate life-threatening conditions.

Risk Factors for Serious Chest Pain

Higher risk occurs in people with:

smoking history
recent surgery or long travel
lung disease
heart disease
clotting disorders

Early evaluation is critical.

Diagnostic Evaluation

Doctors may recommend:

physical examination
chest X-ray
ECG
blood tests
CT scan

Timely diagnosis saves lives.

Why Chest Pain Should Not Be Ignored

Ignoring chest pain can lead to:

delayed treatment
worsening respiratory failure
preventable complications

WHO emphasises early symptom recognition for better outcomes.

Impact of Air Pollution and Lifestyle

Air pollution increases:

lung inflammation
infection risk

Sedentary habits reduce lung capacity, worsening symptoms.

Preventive Measures

Helpful preventive steps include:

avoiding smoking
staying physically active
managing respiratory infections early
maintaining good posture
staying hydrated

Preventive care reduces risk.

Role of Preventive Health Checkups

Regular health screening helps detect:

early lung disease
heart risk factors
chronic inflammation

Early intervention prevents emergencies.

When Chest Pain Is Less Likely Serious

Pain may be less concerning if:

localized
reproducible on touch
improves with rest

However, medical confirmation is still necessary.

Importance of Timely Medical Consultation

Chest pain should always be evaluated by a healthcare professional.

Delaying care can:

increase complications
raise mortality risk

Early action saves lives.

Conclusion

Chest pain while breathing is a critical symptom that should never be ignored. While causes range from muscle strain and infections to serious lung and heart conditions, only proper medical evaluation can determine the exact cause. Early diagnosis, timely treatment and preventive care are essential to protect respiratory and cardiovascular health. When it comes to chest pain, it is always safer to act early than to wait.

References

Indian Council of Medical Research (ICMR) – Respiratory and Cardiovascular Health Reports
World Health Organization (WHO) – Chest Pain and Respiratory Symptoms Guidelines
National Family Health Survey (NFHS-5) – Adult Respiratory Health Data
Lancet – Pulmonary Embolism and Chest Pain Research
NITI Aayog – Preventive Healthcare and Early Symptom Recognition

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