Microbiology
In Widal test, the significant titre for O agglutinins is generally

1:50 or more
1:2.00 or more
1:100 or more
1:150 or more

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Microbiology
Which of the following is true to prevent botulism from smoked fish?

The fish should be heated at its coolest part to at least 82°C for 30 min during or after smoking
Fish should be immediately frozen after packaging and kept frozen
All of these
Good sanitation should be maintained throughout production and handling

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