Definition: Viral reproduction occurs specifically inside host cells, where viruses hijack cellular machinery to replicate.

Example: Fungal diseases like Rose Black Spot demonstrate how these pathogens can affect both plants and animals.

Highlight: Protist diseases, such as Malaria, represent some of the most significant global health challenges.

Vocabulary: Bacterial diseases like Salmonella and Gonorrhea are caused by pathogenic bacteria that can multiply independently outside host cells.

Definition: Pathogens are microorganisms that cause infectious diseases in living organisms.

Example: Common viral diseases include Measles, HIV, and Tobacco Mosaic virus, demonstrating the diverse range of infections caused by viruses.

Highlight: Bacteria have a distinct characteristic of producing toxins and reproducing rapidly, making them particularly dangerous pathogens.

Vocabulary: Direct contact transmission occurs when pathogens spread through physical contact between infected and uninfected hosts.