Boiling Resistance 1: Ability: Pathogen gains the ability to endure high temperatures for a brief period of time. Increases infectivity.

Boiling Resistance 2: Pathogen is highly resistant to boiling. Increases infectivity.

And maybe freeze resistance 1 and 2:

1: Pathogen is able to resist freezing temperatures for awhile. Increases infectivity.

2: Pathogen can replicate slowly in freezing temperatures over long periods of time. Increases infectivity.

(Something) hardening: (Requires boiling resistance 2, freeze resistance 2, and environmental hardening) Pathogen's hardened coating thickens, making the pathogen comfortable in both freezing and boiling temperatures.

I think maybe for nano virus. Disable kill switch: Makes it so that it can spread without deactiving. A bigger thug life way to win.

So it's like a no cure cheat.

My idea for our zombie making friend, nercoa virus (a Origins Story)

Start in China

Starting Traits:

Zoonotic Shift - Rodent 1 - 2 - 3

Biological Genetic shift (Ability , Already evolved in start) : the virus had survived after 70 years from Containing to the Biological weapons Storage, now has escaped, increases infectivity and Decreased future research speed

Evolve Saliva 1 + Air 1

after 60 days Wait the News headlines:

- Unit 731 is Under Lockdown Due a Mysterious Grave Robbing Incident

- Unit 371 bioweapons facility is now Closed for DNA Sampling

Now Evolve From the Insomnia to Cytopathic Reanimation

wait for the news headline after this:

- War Crimes trial says [Plague name] Created By Unit 731 During World War

Now Evolve : Water 1 + 2, then Urogenital Expansion

Bio - Genetic Mutation (DNA: 29, Requires to access this : Cytopathic Reanimation, Special But same function as Historic Reassortment but it unlocks Advanced Zombie Combat symptoms)- Host DNA can Replicate the other Species DNA to able to mutate into monster like creatures, increases zombie combat effectiveness 

Evolve the Abilities Putrefactive Resistance + Autolytic Delay + Regenerative Activation + Epidermal Digestion

Wait this Pop up and it says:

- A Propaganda film About "Mutant rat monster" Experiment Conducted by Unit 731

Evolve the Cranial Metastasis

then the new unique zombie combat symptoms (if you evolve Bio - Genetic Mutation ability)

- Viral Instability 1 - 3 (same as virus in basic plague)

- Extreme Zoonosis (same effect as in any basic plagues)

- Bacterial tetrodotoxin Bomb(DNA : 27) - Mutant Rat Monsters can Release an Highly lethal strain of tetrodotoxin by throwing them to their foes in lymph nodes like Form, increases Combat advantage

Wait for a popup message that says:

- A Secret Underground Facility Uncovered in Unit 731

Evolve Rodent 2 + Air 3 + Hyperosmia + Temporal Lobe Manipulation + Cathemeral Shift + Vampiric Hunger

Wait this news headline (Victory condition):

- Elite Forces had being Eaten By Mutant Rat Monsters in Unit 731

Wait for this news headline (if you Failed, human victory)

- Elite forces Successfully Infiltrated Unit 731

Wow. That's impressive.

Woah.

Woah...

Why did you pretty much copy me?

RANDOM NEWS HEADLINE:

Ford orders mass recall on it's vehicles after numerous reports of divers returning on foot.

RANDOM NEWS HEADLINE:

Fiat to let go over half their mechanics after a jobs report shows that 80% of it's mechanics are named Tony.

RANDOM NEWS HEADLINE:

Multiple reports of self-inflicted wounds after uncountable numbers of banana peels are found in the streets.

RANDOM NEWS HEADLINE:

University calls off school for a semester after supposed sightings of 'Monsters' around campus.

RANDOM NEWS HEADLINE:

CDC states that they are 'never going to find a cure for the Black Death, but will keep trying'.