About Petrina Crostella

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So far Petrina Crostella has created 3 blog entries.

COVID-19 info


Am I at increased risk of COVID-19 infection? The virus causing COVID-19 infection (called SARS-CoV-2) is a new infection that has not previously affected humans. Therefore, there is no immunity to this infection in the community. The infection appears to be spread by droplets through being exposed to someone who is coughing or sneezing, [...]

COVID-19 info2022-03-18T11:10:07+08:00
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