The answer depends on what is causing your infection. The following are some basic guidelines:
• Colds and Flu: Viruses cause these illnesses. They can't be cured with antibiotics.
• Sore throat, Cough or Bronchitis: These can be caused by both bacteria and Viruses. Your doctor may decide to try using an antibiotic.
• Ear infections: There are several types of ear infections. Antibiotics are used for some (but not all) ear infections.
• Sinus infection: Antibiotics are often used to treat sinus infections. However, a runny nose and yellow or green mucus do not necessarily mean you need an antibiotic.
• Dengue fever: Antibiotics are not required. Take paracetamol, adequate fluid and rest under mosquito net.
• Acute diarrhoea in children does not require an antibiotic, but oral rehydration salts and clear instructions to parents.