Q. With reference to viral spillover risk, consider the following statements;
1.It is a process of viruses infecting a new host from a reservoir host by being able to transmit sustainably in a novel host.
2.Climate change will increase viral spillover risk more.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Statement 1 is correct: Viruses may infect a new host from a reservoir host (in which it usually resides) by being able to transmit sustainably in a novel host – a process defined as ‘viral spillover’.

Statement 2 is correct: Researchers collected samples from Lake Hazen in Canada, the world’s largest High Arctic lake by volume and has the largest freshwater ecosystem.

Based on the study, they concluded that climate change is melting glaciers and this could create a possibility of the emergence of new viruses trapped in the ice for years.

The hosts (humans or animals) can move to previously inhabitable regions and can come in contact with such pathogens which could cause viral spillover.

Source: What ‘viral spillover risk’ means, and how it could lead to new pandemics