Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.
The coronavirus is usually transmitted by droplets, such as those produced when coughing and sneezing, and by direct or indirect contact with secretions infected by the virus. The virus may also shed in blood, urine and faeces, and, therefore, there is potential for transmission through contact with a wide range of bodily fluids. Certainly, person-to-person spread has been confirmed in community and healthcare settings across Asia and into Europe. There is also a possibility that asymptomatic carriers may be able to infect people. Public Health England (PHE) has classified the COVID-19 infection as an airborne, high consequence infectious disease (HCID) in the UK.
The application of infection prevention and control (IPC) principles are already widely used by healthcare professionals within hospital and community settings to both prevent the spread of infections and to control outbreaks when they do occur. The WHO has issued 
guidance regarding IPC when COVID-19 is suspected. This advice is echoed by guidance issued by PHE.
PHE suggests the coronavirus may pose complications, such as illness pneumonia or severe acute respiratory infection. 
also suggest that patients with long-term conditions or are immunocompromised are at risk of these complications. It is important that as first-line staff, midwives are also familiar with the recommended IPC principles and measures, and ensure they have the appropriate personal protective equipment (PPE) when caring for a patient with suspected COVID-19.
Question: What is the main idea of the passage?