Coronavirus COVID-19
Join the discussions relating to the Corona Virus and help fight medical misinformation. The 2019–20 coronavirus outbreak is an ongoing outbreak of coronavirus disease 2019 caused by SARS-CoV-2, which started in December 2019. It was first identified in Wuhan, capital of Hubei province China. Join us in discussions relating to the virus, how we can stay safe and how to avoid fake news or misinformation.
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Hi @vermie , based on current guidelines, it may not be necessary to go to TTSH (since your friend has no symptoms he is 1st ring of exposure, and you are in ring 2) unless you have severe features of flu (breathlessness, etc) based on your situation. 

Doing so may result in unnecessary waiting and time wastage on your end if they determine you are at low risk and turn you away. Instead, I would recommend a teleconsult or to visit your nearby GP clinic to determine if you have any severe features. 

Note that although the teleconsult from home option through platforms like DoctorWorld is more convenient, if you are found to have severe features, you may still need to visit your nearby GP clinic to be examined and for them to assess if you are truly at risk and in need of testing in TTSH. Hope this helps!
Dr. Dinesh G
space doctor
@miss_understood You can prevent contracting the wuhan coronavirus by practising safe personal hygiene. You should wash your hands with soap after coming into contact with common objects, before eating and before touching your face. You should avoid going to crowded areas and consider wearing surgical face mask when in crowded areas or when you are not feeling well. N95 mask will definitely be more protective against the wuhan coronavirus as compared to surgical mask, similar to the protection adopted against the SARS coronavirus (Same family of virus as the wuhan coronarvirus). You might like to refer to this article published by channelnewsasia for more health tips: https://www.channelnewsasia.com/news/singapore/wuhan-virus-singapore-what-can-you-do-health-advisory-12324632 Hope this helps! Cheers and happy chinese new year.
Dr. Yan Y T
space doctor
@Lammmmmyyyy This is possible as the influenza virus is constantly mutating and there are many different strains of influenza circulating in the community. You might had your influenza vaccine previously but it did not cover the strain of influenza that you contracted. Therefore will advise yourself and other patients to practise hand hygiene and stay away from patients who are coughing and sick, despite having previous influenza vaccination. Hope this helps. Get well soon.
Dr. Yan Y T
space doctor