The phrase "and so avoid" is correct and usable in written English.
It can be used to indicate a consequence or result of an action taken to prevent something undesirable.
Example: "He decided to leave early, and so avoid the heavy traffic."
Alternatives: "thus prevent" or "thereby evade".
But how can they tell babies postponed from babies forgone, and so avoid wrongly predicting a fall in family size?
That should keep its IT purchases up for a while, and so avoid any immediate damage to Atos Origin's revenues.
In Manhattan, plenty of places get classified as tobacco bars and so avoid New York's 2003 ban.
Much work has been undertaken to characterize ash layers both physically and chemically and so avoid incorrect correlations.
He tried hard and long to persuade Spain to relinquish its hold on Cuba and so avoid war.Another moderate, Senator Redfield Proctor, was perhaps as influential.
Thanks to his influence, the youngster was able to join the People's Liberation Army at 15 and so avoid the worst deprivations of the Cultural Revolution.
The plan, clearly, is to get ahead of the curve and so avoid the need for full-blown quantitative easing (QE), something Germany and its allies oppose.
Still, many property owners have been able to fend off the banks and so avoid selling cherished property at a discount.
One possibility is that Trump is waging a campaign to drive Sessions out, and so avoid the Nixonian fallout of a Saturday Night Massacre moment.
White House officials say their strategy, for now, is to avoid having the president mention some deaths but not others, and so avoid inequity.
The New Yorker, February 28 , 1931 P. 9We should follow the Parisian system of naming all streets instead of numbering them and so avoid much confusion.
