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Dr. Ankita Baidya | Infectious disease specialist in Delhi | Manipal Hospital

Dr. Ankita Baidya

HOD and Consultant - Infectious Diseases

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Dr. Ankita Baidya | Infectious disease specialist in Delhi | Manipal Hospital
Reviewed by

Dr. Ankita Baidya

HOD and Consultant - Infectious Diseases

Manipal Hospitals, Delhi

Common Bacterial Infections in Humans and Ways to Stay Protected

Reviewed by:

Dr. Ankita Baidya

Posted On: Jul 17, 2025
blogs read 5 Min Read
Types and Prevention of Bacterial Infections in Humans

Bacterial infections occur almost every day, often in places we least expect. Bacteria enter the body after a scratch on the hand or by way of some greasy takeaway, and sometimes the consequences for the victim can be quite grave.

So, what is a bacterial infection?

In layman's terms, bacterial infection is the invasion, colonisation, and multiplication of harmful bacteria in the body that cause either sickness or discomfort. Many bacteria, however, do not harm; some are beneficial if they stay where they belong.

 

Modern Advancements in Bacterial Infection Management

In recent years, the approach to diagnosing and managing bacterial infections has advanced remarkably, with new treatments and diagnostic techniques making care safer and more effective than ever before. Understandably, this rapid progress can leave patients feeling uncertain about where to turn for reliable advice and treatment.

Rest assured, at Manipal Hospitals, Delhi, you’ll find the Best Infectious Disease Doctors in Delhi who specialise in precisely this area. With a commitment to precision, safety, and patient-centred care, our doctors lead the way in diagnosing, treating, and preventing bacterial infections, ensuring you receive advanced, compassionate care every step of the way.

Types of Bacterial Infections: The Usual Suspects

Knowing the types of bacterial infections will help you recognise any early symptoms and seek the proper assistance. Here are some common ones: 

  • Respiratory Infections: These include pneumonia and strep throat, often caused by Streptococcus pneumoniae and group-A Streptococcus. Symptoms include coughing and sore throat, chest pains, and fever.

  • Urinary Tract Infection (UTI): Caused mostly by Escherichia coli (E. coli), UTIs cause burning sensations while urinating, urgency to urinate frequently, and sometimes even blood in the urine.

  • Gastrointestinal Infections: Various bacterial agents such as Salmonella and E. coli are responsible for food poisoning, carrying with it a wide range of side effects like nausea, vomiting, diarrhoea, or abdominal cramps.

  • Sexually Transmitted Infections (STIs): The more common ones are gonorrhoea and chlamydia, caused by Neisseria gonorrhoeae and Chlamydia trachomatis, respectively.

  • Sepsis: A terrible infection that goes systemic, bacteria enter the bloodstream, causing inflammation throughout the organs, which leads to organ failure and even death if not treated successfully.

How to Prevent Bacterial Infections: Simple Means

  • Hand Hygiene: Wash your hands using soap and water after going to the toilet and before eating; also, if you have touched animals or contaminated surfaces.

  • Safe Food Practices: Keep meat well-cooked- do not take raw meat. Avoid unpasteurised milk. Washing all fruits and vegetables keeps you free of any food-related infections. 

  • Wound care: Treat wounds and cuts immediately. Keep them covered with sterile dressings. Observe for symptoms of infection, such as redness or pus formation.

  • Vaccination: Maintain current vaccination status according to recommendations, such as those against pneumonia or whooping cough.

  • Avoid Close Contact: Stay away from anyone who is ill, and do not share personal items like towels or razors.

  • Safe Sex: Protection and getting regular check-ups for prevention and detection of STIs should be prioritised.

  • Avoid Contaminated Waters: One ought to avoid contact with floodwaters and always assume that the water is unsafe for drinking and washing after an episode of flood or natural calamity.

How to Treat Bacterial Infection: What Works

If one is unfortunate enough to get an infection, it is important to know about how to treat bacterial infection-it may be all that matters:

  • Antibiotics: The basis of how to treat bacterial infection is antibiotics, which will be chosen depending on the kind and location of the infection. One must take the whole course, no matter how good he feels, or else resistance might build up.

  • Symptom Relief: Get some rest, stay hydrated, and take over-the-counter pain relief to alleviate the symptoms as your body fights off infection.

  • Do Not Self-Medicate: Never use leftover antibiotics or someone else’s prescription. Misuse can worsen resistance and delay proper treatment.

  • Medical Care: If you experience a high fever, confusion, difficulty in breathing, or symptoms getting worse by the minute, urgent medical help is required, since this might be a severe infection like sepsis.

Conclusion

Seeking timely guidance from skilled professionals can make all the difference. Our Infectious Disease Unit at Manipal Hospital, Delhi, is dedicated to providing expert, evidence-based care, ensuring you’re supported at every step, from accurate diagnosis to complete recovery. Contact Us and book an appointment now.

FAQ's

Bacterial infection occurs when harmful bacteria enter the body and multiply, whereas viruses cause viral infection. The principal difference is that antibiotics can treat bacterial infections but are useless against viruses.

The most common bacterial infections include respiratory infections such as pneumonia, urinary tract infections, skin infections, gastrointestinal infections, and sexually transmitted diseases.

Wash your hands regularly, handle food safely, care properly for wounds, get vaccinations up to date, and practice safe sex. Those are the important steps on how to guard yourself from bacterial infection.

The usual symptoms are fever, chills, weakness at the site of infection, cough, sore throat, and gastrointestinal upset. Get medical attention if symptoms become severe or do not lessen.

By taking prescribed antibiotics and following the instructions given by the problem-oriented physician. Rest, hydration, and over-the-counter analgesics are of some benefit; however, consult our physicians for advice before taking any medications.

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