Bronchitis and Chest Infections: Symptoms and GP Treatment

A persistent cough is one of the most common reasons people book a GP appointment in Auckland, especially through the winter months. Most coughs come from viral colds and settle on their own, but two related conditions account for the majority of GP visits when symptoms drag on or get worse: bronchitis and pneumonia. Knowing the difference helps you decide whether to rest at home, book a GP visit, or seek urgent care.

Quick note before we start. Chest infection is a general term that covers any infection of the lower airways or lungs. Bronchitis is an infection or inflammation of the larger airways (bronchi). Pneumonia is an infection of the lung tissue itself. Both can follow a cold or flu, but they need different management.

What is bronchitis?

Bronchitis is inflammation of the bronchi, the larger airways that carry air into the lungs. The most common type, acute bronchitis, is almost always caused by viruses such as influenza, rhinovirus, or RSV, and usually follows a cold. Chronic bronchitis is a long-term condition, most often related to smoking or air pollution exposure, and is part of chronic obstructive pulmonary disease (COPD).

Symptoms of acute bronchitis

• A persistent cough is often the most prominent symptom
• Clear, white, yellow, or green mucus production
• Chest discomfort or tightness, especially with coughing
• Low-grade fever and tiredness
• Wheezing or shortness of breath, particularly on exertion
• A cough that can linger for up to 3 weeks, even after other symptoms resolve

Causes of bronchitis

• Viral infection (around 90 percent of cases)
• Bacterial infection (less common)
• Smoking and secondhand smoke
• Air pollution and workplace dust or fume exposure
• Underlying asthma or allergic conditions

What is pneumonia?

Pneumonia is an infection of the lung tissue itself, where small air sacs (alveoli) fill with fluid or pus and make breathing harder. It can be caused by bacteria, viruses, or, less often, fungi. Pneumonia tends to cause people to feel more unwell than bronchitis and is more likely to need antibiotics or hospital care. In New Zealand, pneumonia is a leading reason for hospital admission in older adults and young children.

Symptoms of pneumonia

Cough, often producing thick yellow, green, or rust coloured mucus

• Fever, sweating, and shaking chills
• Shortness of breath, even at rest
• Sharp chest pain that gets worse with breathing or coughing
• Rapid breathing or rapid heart rate
• Feeling very tired or generally unwell
• Confusion or new disorientation in older adults
• Reduced feeding or unusual sleepiness in young children

Who is at higher risk

• Adults aged 65 and over
• Children under 2
• People with chronic lung conditions (COPD, asthma, bronchiectasis)
• People with heart, kidney, or liver disease, or diabetes
• Smokers and people with high alcohol use
• People who are immunosuppressed, including pregnancy and recent chemotherapy

How bronchitis and pneumonia differ

When to see a GP

Most chest infections settle within 1 to 3 weeks. Book a GP appointment if:

• The cough has lasted more than 3 weeks
• You have a fever above 38.5 degrees Celsius for more than 48 hours
• Mucus is thick, discoloured, or blood-streaked
• You are increasingly short of breath, including at rest
• Chest pain is sharp or worsens with breathing
• You feel much more unwell than with a typical cold
• You are aged over 65, have a chronic illness, are pregnant, or are immunosuppressed
• Symptoms initially improved and then worsened (a sign of bacterial infection following a virus)

Seek urgent care at ED or call 111 if there is:

- Difficulty breathing or noticeable breathlessness at rest

- Blue or grey lips, fingertips, or face

- Severe chest pain

- Coughing up significant amounts of blood

- Confusion, drowsiness, or fainting

- A child under 2 with rapid breathing, nasal flaring, or chest indrawing

How a GP diagnoses chest infections

At CityMed and most Auckland GP clinics, the consultation typically includes:

• A full history: how long the cough has lasted, fever pattern, mucus colour, breathing difficulty, smoking, vaccination status, and underlying conditions
• Examination of vital signs, throat, ears, and chest, including listening to the lungs with a stethoscope
• Oxygen saturation check with a pulse oximeter
• Sputum or nasal swab tests when influenza, COVID-19, or whooping cough is suspected
• Blood tests in more severe cases to check for bacterial infection or organ involvement
• Chest X-ray when pneumonia is suspected, when the chest exam is concerning, or when symptoms are not improving

Treatment

Home care for viral bronchitis

• Rest and drink plenty of fluids to keep the mucus loose
• Paracetamol or ibuprofen for fever, headache, or chest discomfort, taken at the recommended dose
• Honey and warm drinks may help soothe a dry cough (avoid honey in babies under 1)
• A cool mist humidifier or a steamy bathroom can ease cough and airway irritation
• Stop smoking, even temporarily, to reduce airway irritation
• Avoid over-the-counter cough suppressants in children under 6, since they have limited benefit and possible side effects

Antibiotic treatment

• Antibiotics do not help viral bronchitis and are not routinely prescribed for an uncomplicated cough
• Antibiotics are prescribed when pneumonia is suspected or confirmed, when a bacterial cause is likely, or when the patient is at high risk of complications
• Amoxicillin is the first-line antibiotic for community-acquired pneumonia in New Zealand, with doxycycline or roxithromycin as alternatives for penicillin allergy
• It is important to finish the full course even when symptoms improve

Recovery expectations

• Acute bronchitis: most symptoms improve within 1 to 2 weeks, but the cough can persist for up to 3 weeks
• Pneumonia: fever and breathlessness typically improve within 3 to 7 days of starting treatment, cough and tiredness may take 4 to 6 weeks to fully resolve
• A follow-up GP visit is recommended if a cough lasts more than 3 weeks, symptoms recur, or chest pain develops

Complications to watch for

• Worsening pneumonia: fluid around the lungs (pleural effusion), abscess, or bloodstream infection (sepsis). Needs hospital care.
• Asthma flare-ups: viral chest infections are a common trigger and may need short-term steroid treatment.
• Postinfectious cough: a dry cough lasting several weeks after the infection clears, usually self-limiting but worth reviewing if it persists.
• Whooping cough: consider in adults with a cough lasting more than 2 weeks, especially with bouts of coughing followed by a whooping sound or vomiting.

Prevention

• Annual influenza vaccination, funded in NZ for adults aged 65 and over, pregnant women, Maori and Pacific aged 55 and over, and people with chronic conditions
• Pneumococcal vaccination, funded for at-risk groups, helps prevent the most common bacterial cause of pneumonia
• Stay up to date with COVID-19 boosters, especially for older adults and high-risk groups
• Wash hands regularly and cover coughs and sneezes
• Stop smoking and reduce exposure to secondhand smoke
• Keep underlying conditions such as asthma and COPD well controlled, with a current management plan
• Heat and ventilate the home well, especially in damp Auckland winters

Frequently asked questions

Do I always need antibiotics for a chest infection?

No. Most chest infections are viral and recover with rest and fluids. Antibiotics only work against bacteria. Your GP will decide based on your symptoms, examination findings, risk factors, and where needed a chest X-ray. Taking antibiotics when not needed contributes to antibiotic resistance.

How long is a chest infection contagious?

Viral chest infections are most contagious in the first few days, when fever and mucus production are highest, and usually become much less infectious after 5 to 7 days. Bacterial pneumonia treated with antibiotics is typically no longer contagious 24 to 48 hours after starting treatment.

When should I get a chest X-ray?

Your GP will arrange a chest X-ray when pneumonia is suspected, when the chest exam shows something unusual, when symptoms are not improving as expected, or when there is a risk factor for serious infection. Most uncomplicated bronchitis does not need a chest X-ray.

Why is my cough lasting so long?

A cough lasting up to 3 weeks after a viral chest infection is normal and reflects ongoing healing in the airways. If your cough lasts more than 3 weeks, comes with blood or weight loss, or you smoke, your GP will review whether further investigation is needed.

Can I get the flu and pneumococcal vaccines at the same time?

Yes. The influenza vaccine and the pneumococcal vaccine can be given safely at the same GP visit, often in different arms. Many Auckland adults choose to have both ahead of winter. Eligibility for funded vaccines depends on age, ethnicity, and underlying conditions; your GP can check this with you.

Need to see a GP in Auckland?

CityMed Medical Centre offers same-day GP appointments in Auckland CBD for bronchitis, chest infections, pneumonia assessment, and seasonal flu and pneumococcal vaccinations.

If your cough is getting worse, you feel increasingly short of breath, or you are in a higher-risk group, please book the same day rather than waiting it out.

Book online at citymed.co.nz or call our reception.