A couple of questions

How do they test for the Omicron variant of COVID-19?

Can COVID-19 be detected by CT scan?

Along with laboratory testing, chest CT scans may be helpful to diagnose COVID-19 in individuals with a high clinical suspicion of infection.

Do you need a PCR test to enter UK?

Before departure: All unvaccinated travellers to the UK aged 12 and over must show proof of a negative test. This can be an LFT or PCR test, and must have been taken in the two days before departure for the UK. You'll need to find a private test provider for this — free NHS tests cannot be used.

What are the organs most affected by COVID‐19?

The lungs are the organs most affected by COVID‐19

Has the coronavirus disease been detected in blood and stool?

COVID-19 virus has been detected in blood and stool, as had the coronaviruses responsible for SARS and MERS (14,16,19-21). The duration and frequency of shedding of COVID-19 virus in stool and potentially in urine is unknown.

How long does it take for symptoms of the coronavirus disease to appear?

On average it takes 5–6 days from when someone is infected with the virus for symptoms to show, however it can take up to 14 days.

Can COVID-19 be transmitted through food?

There is currently no evidence that people can catch COVID-19 from food. The virus that causes COVID-19 can be killed at temperatures similar to that of other known viruses and bacteria found in food.

Can I enter Australia unvaccinated?

Most non-Australian citizens are still barred from entering the country unless they obtain a travel exemption and are fully vaccinated.